Acthar Gel (repository corticotropin) — HCPCS J0801

Mallinckrodt Pharmaceuticals · 5 mL multi-dose vial (80 USP units/mL) · Subcutaneous or intramuscular · 10+ FDA-approved indications across MS, infantile spasms, nephrotic syndrome, rheumatic, collagen, dermatologic, allergic, ophthalmic, respiratory, edematous states

Acthar Gel is a long-acting porcine ACTH analog billed under HCPCS J0801 with one of the most error-prone unit definitions in the code set: 1 billable unit = 40 USP units of corticotropin. Doses above 40 USP units bill J0802 ("each additional 40 units"). SC or IM only — never IV. Q2 2026 Medicare reimbursement: $4,094.259 per 40-unit billing unit ($8,188.52 per 80 USP unit dose, ASP + 6%). Aggressive payer PA scrutiny — pricing rose ~100,000% from 2001-2018; generic prednisone is ~1,000-10,000× cheaper per course.

ASP data:Q2 2026 (live)
Payer policies:verified May 2026
Manufacturer guide:Mallinckrodt 2025
FDA label:most recent revision
Page reviewed:

Instant Answer — the 5 things you need to bill J0801

HCPCS
J0801
1 unit = 40 USP units
Add-on code
J0802
Each addtl 40 USP units
Modifier
JZ/JW
Per multi-dose vial draw
Admin CPT
96372
Therapeutic SC/IM
Medicare ASP+6%
$4,094.259
per 40 USP unit billing unit, Q2 2026 · $8,188.52/80 USP units
HCPCS descriptor
J0801 — "Injection, Acthar Gel, up to 40 units" Permanent
Add-on descriptor
J0802 — "Injection, Acthar Gel, each additional 40 units"
Brand & generic
H.P. Acthar Gel (brand) / repository corticotropin injection (generic, porcine ACTH analog)
Vial
5 mL multi-dose vial @ 80 USP units/mL = 400 USP units total per vial (~10 doses of 40 USP units, or ~5 doses of 80 USP units)
Route
Subcutaneous (SC) OR intramuscular (IM) — never IV (contraindicated; severe hypersensitivity risk)
Indications
10+ approved: MS exacerbations, infantile spasms (West syndrome), nephrotic syndrome, RA/AS/PsA, SLE/dermatomyositis, severe psoriasis/erythema multiforme, refractory asthma, severe ophthalmic inflammation, symptomatic sarcoidosis, edematous states
Premedication
Not required — ACTH analog
Boxed warning
None (W&P only: adrenal insufficiency on withdrawal, hypertension, hyperglycemia, hypokalemia, infection masking, GI bleeding, behavioral changes, vaccinations contraindicated)
Manufacturer
Mallinckrodt Pharmaceuticals (formerly Questcor)
⚠️
BILLER ERROR TRAP — 1 unit of J0801 = 40 USP units of corticotropin. This is the single most common Acthar Gel coding error. The HCPCS unit definition does NOT match the prescribing units. A 40 USP unit dose = 1 billable unit of J0801 (not 40). An 80 USP unit dose = 1 unit of J0801 + 1 unit of J0802 (not 80 units of J0801, and not 2 units of J0801). Verify dose conversion on every claim.
⚠️
Aggressive payer PA scrutiny. Acthar Gel pricing increased ~100,000% from 2001-2018 (~$40/vial to $40,000+/vial). UnitedHealthcare, Aetna, and Cigna all maintain Acthar-specific PA criteria requiring detailed indication-specific clinical justification AND documentation of standard corticosteroid (prednisone, methylprednisolone) failure or contraindication. Generic prednisone is ~1,000-10,000× cheaper per course of therapy. See payer PA snapshot.
Phase 1 Identify what you're billing Get the unit basis and the J0801/J0802 split right before anything else.

Unit basis — 1 J0801 unit = 40 USP units CMS verified May 2026

The single most error-prone field in Acthar Gel billing. Get this wrong and every claim denies.

HCPCS J0801 is "Injection, Acthar Gel, up to 40 units" — meaning one billable unit of J0801 covers up to 40 USP units of corticotropin. The prescribing units (USP units of corticotropin) and the billing units (J0801/J0802 line-item units) are not 1:1. This is unusual in the HCPCS code set and is the leading cause of Acthar denials.

Do not bill J0801 in USP units. If the patient receives 80 USP units, do NOT bill J0801 × 80 units — that would be billing 3,200 USP units (80 × 40). The correct claim is J0801 × 1 unit + J0802 × 1 unit, totaling 80 USP units. Most payer claim systems will reject the over-units submission, but partial-pay denials and provider-side audit risk are real.

Unit conversion table

USP units administeredJ0801 line-item unitsJ0802 line-item unitsNotes
40 USP units10J0801 only; "up to 40"
75 USP units11J0801 covers first 40; J0802 covers remaining 35 (still "each additional 40")
80 USP units11Common adult MS/sarcoidosis dose
100 USP units12J0801 covers first 40; J0802 × 2 covers remaining 60
120 USP units12Common upper-bound MS exacerbation dose
160 USP units13Higher-dose adjunctive scenarios
Alternate payer interpretation: Some payers expect J0802 line-item units to round up based on partial 40-unit increments (e.g., 75 USP = J0801 + J0802 × 1 because the remaining 35 fits within "each additional 40"). Others enforce strict 40-unit billing. Verify per-payer for non-standard doses; document conversion math in claim notes.

J0801 vs J0802 — which codes when CMS HCPCS verified May 2026

J0801 is always the base; J0802 stacks on for doses exceeding 40 USP units in a single administration.

CodeDescriptorWhen to use
J0801 "Injection, Acthar Gel, up to 40 units" Always required for any Acthar Gel administration. Bill 1 unit per administered dose, regardless of whether the dose is 20, 30, or 40 USP units.
J0802 "Injection, Acthar Gel, each additional 40 units" Required when dose exceeds 40 USP units in a single administration. Bill the appropriate number of additional 40-unit increments (or partial increments per payer policy).

Worked examples

# Example 1 — MS exacerbation, 80 USP units SC daily
Per-dose billing: J0801 × 1 + J0802 × 1
Per-dose Medicare ASP+6%: ~$8,188.52
Admin: CPT 96372

# Example 2 — MS exacerbation, 120 USP units SC daily
Per-dose billing: J0801 × 1 + J0802 × 2
Per-dose Medicare ASP+6%: ~$12,282.78
Admin: CPT 96372

# Example 3 — Infantile spasms, 75 USP units/m² BID, BSA 0.4 m² = 30 USP units BID
Per-dose billing: J0801 × 1 + J0802 × 0
Per-dose Medicare ASP+6%: ~$4,094.26
Twice-daily × 14 days = 28 doses billed
Common error: Billing J0801 × 2 (or more) units for a single administration instead of J0801 × 1 + J0802 × N. The HCPCS descriptor for J0801 is singular ("up to 40 units") — only one J0801 unit is billable per administration. The add-on stacks on J0802.

Dosing & unit math FDA label verified May 2026

From the Mallinckrodt-recommended dosing in the current FDA prescribing information.

Route

  • Subcutaneous (SC) or intramuscular (IM) — both are FDA-labeled routes
  • Never IV — intravenous administration is contraindicated and can cause severe hypersensitivity reactions
  • Most outpatient scenarios use SC route for self/caregiver administration

Vial

  • 5 mL multi-dose vial @ 80 USP units/mL = 400 USP units per vial
  • Single 5 mL vial provides ~10 doses of 40 USP units, ~5 doses of 80 USP units, or ~3-4 doses of 120 USP units
  • Multi-dose vial — track per-dose draws against vial total for waste documentation (see Modifiers)

Premedication

Not required. Acthar Gel is a porcine-derived ACTH analog and does not require infusion-style premedication. Standard injection-site care applies.

Multi-indication dosing matrix Mallinckrodt label verified May 2026

Acthar Gel has 10+ FDA indications with dramatically different dosing patterns. Match the dose to the documented diagnosis on every claim.

IndicationDoseRouteSchedulePer-dose J0801/J0802
MS acute exacerbations (adult) 80–120 USP units IM/SC Daily × 2–3 weeks, then taper J0801 × 1 + J0802 × 1–2
Infantile spasms (West syndrome) 75 USP units/m² IM/SC BID × 2 weeks, then taper over 2 weeks J0801 × 1 (+ J0802 if BSA-based dose >40)
Nephrotic syndrome (induction) 80 USP units IM/SC Daily × 1 week J0801 × 1 + J0802 × 1
Nephrotic syndrome (maintenance) 80 USP units IM/SC Every 2–3 days J0801 × 1 + J0802 × 1
Rheumatic disorders (RA, AS, PsA) 40–80 USP units IM/SC Every 24–72 hours J0801 × 1 (+ J0802 × 1 if 80)
Collagen diseases (SLE, dermatomyositis, polymyositis) 40–80 USP units IM/SC Every 24–72 hours J0801 × 1 (+ J0802 × 1 if 80)
Symptomatic sarcoidosis 80 USP units IM/SC Every 48–72 hours J0801 × 1 + J0802 × 1
Severe psoriasis / erythema multiforme 40–80 USP units IM/SC Every 24–72 hours J0801 × 1 (+ J0802 × 1 if 80)
Refractory severe asthma / atopic dermatitis 40–80 USP units IM/SC Per response, typically q24-72h J0801 × 1 (+ J0802 × 1 if 80)
Severe ophthalmic inflammation 40–80 USP units IM/SC Per response, typically q24-72h J0801 × 1 (+ J0802 × 1 if 80)
Infantile spasms (West syndrome) is the only clear gold-standard indication. Per American Academy of Neurology / Child Neurology Society 2022 guideline, ACTH (or vigabatrin) is first-line for new-onset infantile spasms. For all other Acthar indications, payers expect documentation of failed/contraindicated standard corticosteroid therapy first.
BSA-based pediatric dose calculation: Infantile spasms dosing is 75 USP units/m² BID. A 0.3 m² infant receives ~22 USP units BID (J0801 × 1 only); a 0.5 m² child receives ~38 USP units BID (still J0801 × 1 only); a 0.6 m² child receives 45 USP units BID (J0801 × 1 + J0802 × 1). Document BSA calculation in claim notes.

NDC reference FDA NDC Directory verified May 2026

NDC (10/11-digit)PackageUse
63004-7731-01 / 63004-77310-01 5 mL multi-dose vial — 80 USP units/mL (400 USP units total) Standard commercial package; one vial provides ~10 doses of 40 USP units
Multi-dose vial means waste tracking matters. Unlike single-dose vials where the JZ modifier blanket-applies, Acthar's 5 mL multi-dose vial requires per-draw documentation. Report discarded/expired contents separately if the vial is not fully used within the in-use beyond-use date.
Phase 2 Code the claim SC/IM injection coding (96372). Never IV infusion codes.

Administration codes CPT verified May 2026

Acthar Gel is SC/IM only. Use 96372 — do NOT use IV infusion codes (96365/96366) or pump infusion codes (96370/96371).

CodeDescriptionWhen to use
96372 Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); subcutaneous or intramuscular Primary code for Acthar Gel. Single SC or IM injection. One unit per administration.
96365 / 96366 Therapeutic IV infusion NOT appropriate. Acthar Gel is contraindicated for IV administration; severe hypersensitivity risk if given IV.
96370 / 96371 SC infusion via pump (non-chemo) NOT appropriate. Acthar is a single SC/IM injection, not a pump infusion. Use 96372 only.
99211–99215 E/M codes Use modifier 25 when significant separately identifiable E/M is performed same day as injection.
Never IV. Per FDA label, Acthar Gel must NOT be administered intravenously. IV administration can cause severe hypersensitivity reactions. Confirm SC/IM route on every order; reject any order written "IV" before administering.

Modifiers CMS verified May 2026

JZ — multi-dose vial considerations

CMS's July 2023 single-dose container policy mandates JZ on claims with no waste from a single-dose container. Acthar Gel ships in a 5 mL multi-dose vial, so the strict JZ/JW single-dose policy does not apply in the same way as it does to single-dose biologics. However, many payer systems still expect a modifier on Acthar claims for audit clarity. Document per-draw amounts and the in-use beyond-use-date for the vial.

JW — discarded multi-dose vial contents

If the multi-dose vial expires before all 400 USP units are used (28-day in-use BUD typical for repository corticotropin), report discarded units on a separate JW line per MAC policy. Track per-vial utilization carefully — high per-unit cost makes any discarded contents materially expensive.

MAC variation: Modifier policy for Acthar's multi-dose vial varies by MAC. Novitas/FCSO may handle differently than Noridian/Palmetto. Verify your MAC's published policy before the first Acthar claim each year.

Modifier 25 — same-day E/M

Use modifier 25 on the E/M code when a significant, separately identifiable evaluation and management service is performed on the same day as the injection. Routine pre-injection clinical assessment is bundled.

340B modifiers (JG, TB)

For 340B-acquired Acthar Gel, follow your MAC's current 340B modifier policy. Acthar's high price makes 340B participation status particularly impactful for hospital outpatient claims.

ICD-10-CM by indication group FY2026 verified May 2026

10+ FDA-approved indications. Use the most specific code supported by encounter documentation.

IndicationICD-10 familyNotes
Multiple sclerosis (acute exacerbation)G35Adult; document acute exacerbation in encounter note
Infantile spasms (West syndrome)G40.821 (intractable, with status) / G40.822 (intractable, without)Pediatric <2 yr; gold-standard indication; document EEG findings
Nephrotic syndrome (idiopathic)N04.x4th character per histologic pattern (minimal change, FSGS, MN, etc.)
Nephrotic syndrome (lupus-related)M32.14 + N08SLE with nephritis
Rheumatoid arthritisM05.x / M06.xAdjunctive only; document standard therapy failure
Ankylosing spondylitisM45.xAdjunctive only
Psoriatic arthritisL40.5xSevere disease; adjunctive
Systemic lupus erythematosus (SLE)M32.xAdjunctive in collagen disease group
Dermatomyositis / polymyositisM33.x / M33.20Adjunctive in collagen disease group
Severe psoriasisL40.xSevere; adjunctive
Severe erythema multiformeL51.xAdjunctive in dermatologic group
Refractory severe asthmaJ45.5xAdjunctive in allergic states
Severe atopic dermatitisL20.xAdjunctive in allergic states
Symptomatic sarcoidosisD86.0–D86.9Site-specific 4th character
Severe ophthalmic inflammationH10.x / H20.x / H30.xSevere acute or chronic allergic/inflammatory
Edematous states (proteinuria)R60.x + nephrotic ICD-10Used for diuresis induction in nephrotic syndrome
Indication-specific PA criteria. Most payers require ICD-10 + prior corticosteroid therapy history + clinical justification for Acthar specifically. The ICD-10 alone is not sufficient for approval — see the aggressive payer PA section below.

Site of care & place of service Verified May 2026

Most Acthar Gel administration is outpatient: physician office, specialty pharmacy with home self-/ caregiver-administration, or pediatric neurology clinic for infantile spasms. Hospital outpatient billing of Acthar is rare and typically draws additional UM scrutiny.

SettingPOSClaim formNotes
Physician office (rheumatology, neurology, pulm, derm, etc.)11CMS-1500 / 837PMost common — J0801/J0802 + 96372
Pediatric neurology clinic (infantile spasms)11CMS-1500 / 837PBID dosing for first 2 weeks; coordinate caregiver training
Specialty pharmacy + home administration12Specialty pharmacy bills drug; provider may bill teaching/E&MCommon for chronic adjunctive use; CuraScript / Accredo / others
Hospital outpatient (HOPD)22 / 19UB-04 / 837IRare; expect additional payer scrutiny
Inpatient (rare)21UB-04 / 837IBundled into DRG; not separately billable

Claim form field mapping Mallinckrodt 2025

Multi-dose vial + dual-code (J0801/J0802) + USP unit conversion = three layers of error potential.

InformationCMS-1500 boxNotes
NPI17bRendering provider
NDC qualifier + 11-digit NDC + UoM + qty24A shaded areaN4 + carton NDC + ML + total volume drawn (e.g., 0.5 mL for 40 USP units, 1 mL for 80 USP units)
HCPCS J0801 (drug line, base)24DAlways 1 unit per administration
HCPCS J0802 (drug line, add-on)24DOnly when dose >40 USP units; appropriate number of additional 40-unit increments
CPT 96372 (admin line)24DTherapeutic SC/IM injection
ICD-1021Indication-specific (see ICD-10 table)
PA number23Required by virtually all major payers
Modifier (JZ/JW per multi-dose policy)24DVerify MAC-specific multi-dose vial modifier guidance
Phase 3 Get paid Aggressive PA scrutiny is the single biggest barrier to Acthar reimbursement.

Aggressive payer PA scrutiny Reviewed May 2026

Acthar Gel is one of the most-scrutinized drugs in US billing. Pricing controversy + broad indication list = layered PA criteria.

Pricing context. Acthar Gel pricing increased approximately 100,000% between 2001 and 2018 — from roughly $40 per vial to over $40,000 per vial — following Questcor's 2001 acquisition of the product and Mallinckrodt's 2014 acquisition of Questcor. The DOJ's 2020 settlement with Mallinckrodt and ongoing payer-side litigation have made Acthar one of the most-scrutinized Part B drugs in the catalog.

Per-payer PA snapshot

PayerPA?Step therapyIndication-specific criteria
UnitedHealthcare
Acthar-specific medical policy
Yes — aggressive Generic prednisone or methylprednisolone failure required for most non-infantile-spasms indications For MS: IV methylprednisolone failure documented. For infantile spasms: neurology consult + EEG/NCS findings.
Aetna
CPB (Acthar-specific)
Yes — aggressive Required for adjunctive indications (RA, PsA, lupus, sarcoidosis, etc.) Aetna lists infantile spasms as the only "preferred" Acthar indication. All others require detailed corticosteroid failure or contraindication documentation.
Cigna
Coverage Position
Yes — aggressive Generic corticosteroid failure required for most indications Cigna requires documented inadequate response or intolerance to at least 2 weeks of optimized corticosteroid therapy.
BCBS plans Yes Plan-specific; generally aligned with national specialty drug PA frameworks Most plans require corticosteroid trial documentation; some plans cover infantile spasms with neurology consult only.
Medicare Part B (FFS) No PA at MAC level None at MAC level Pays per ASP+6% methodology; on-label coverage. MA plans commonly impose commercial-style PA on top.
Medicaid Yes — state-specific State-specific; often required State PDLs typically nonpreferred status; PA criteria highly variable.

Documentation checklist for PA submission

  • Specific FDA indication with ICD-10 code and clinical narrative
  • Prior corticosteroid history: drug name, dose, duration, response (or contraindication rationale)
  • For MS exacerbations: IV methylprednisolone trial details (typically 1 g daily × 3-5 days), response or contraindication
  • For infantile spasms: neurology consult note, EEG findings (hypsarrhythmia), age, prior therapy
  • For nephrotic syndrome: renal biopsy if available, prior immunosuppressive therapy, urine protein levels
  • For rheumatic / collagen disease: rheumatology consult, prior DMARD/biologic history, disease activity measures
  • Planned dose, route, and duration per FDA label
  • Provider attestation that no formulary corticosteroid alternative is appropriate

Alternative corticosteroid cost comparison Reviewed May 2026

Payers explicitly compare Acthar to generic prednisone and methylprednisolone. The cost differential is 1,000 to 10,000-fold.

DrugPer-dose cost (typical)Per-course cost (typical)Notes
Acthar Gel (J0801/J0802, 80 USP units) ~$8,189 (Medicare ASP+6%) ~$40,000–$80,000 (2-3 week course) Repository corticotropin, SC/IM
Generic prednisone (oral, 60 mg) $0.10–$1.00 $10–$50 (2-3 week taper) First-line for most non-infantile-spasms indications
Methylprednisolone IV (Solu-Medrol, 1 g) $15–$50 $45–$250 (3-5 day pulse) Standard for MS acute exacerbation; tried before Acthar in MS PA
Vigabatrin (alternative to Acthar for infantile spasms) ~$50–$200/day ~$5,000–$15,000 (initial course) Listed alongside ACTH as first-line for infantile spasms per AAN/ChNS
# Cost differential — MS exacerbation (3-week course)
Acthar 80 USP units IM/SC daily × 21 days: ~$172,000
IV methylprednisolone 1 g daily × 5 days + oral taper: ~$200–$500
Differential: ~340× to 850× more for Acthar
This is the single biggest reason for Acthar denials. Payers will compare your clinical justification against the cost differential. For MS exacerbations, IV methylprednisolone failure documentation is the standard prerequisite. For infantile spasms, the AAN/ChNS guideline position protects ACTH first-line status. For all other indications, expect tight scrutiny of the prior corticosteroid trial.

Medicare reimbursement CMS Q2 2026 (live)

Quarterly ASP from CMS Part B Drug Pricing File. Refreshes automatically each quarter.

Q2 2026 payment snapshot — J0801

Effective April 1 – June 30, 2026 · Based on 4Q25 ASP submissions

ASP + 6% per billing unit
$4,094.259
per 40 USP unit (~$102.36/USP unit)
80 USP unit dose
$8,188.52
J0801 × 1 + J0802 × 1
120 USP unit dose
$12,282.78
J0801 × 1 + J0802 × 2
Per-course estimate — MS exacerbation: 80–120 USP units IM/SC daily × 14–21 days = ~$115,000–$258,000 drug cost (Medicare ASP+6%) before sequestration. After ~2% sequestration, actual paid is ~ASP + 4.3%.
Per-course estimate — infantile spasms (West syndrome): 75 USP units/m² BID × 14 days, then 2-week taper. For a 0.4 m² infant: 30 USP units BID × 28 doses (induction) + taper doses = ~$115,000–$170,000 total course (Medicare ASP+6%).

Coverage

Acthar Gel is covered under Medicare Part B as a physician-administered injectable. No NCD specific to repository corticotropin. MAC LCDs vary; Medicare Advantage plans commonly impose commercial-style PA criteria on top of FFS coverage. Pediatric infantile spasms cases may also intersect with Medicaid coverage where the patient is dually eligible.

Code history

  • J0801 — "Injection, Acthar Gel, up to 40 units" — current permanent code
  • J0802 — "Injection, Acthar Gel, each additional 40 units" — current permanent code
  • Note: prior to current J0801/J0802 split, repository corticotropin used different code structures; verify code effective dates if reviewing historical claims.

Patient assistance — Acthar Patient Support Mallinckrodt verified May 2026

  • Acthar Patient Support: 1-888-435-2284 — benefits investigation, prior authorization assistance, appeal support
  • Mallinckrodt Patient Assistance Program: free or reduced-cost product for uninsured / underinsured patients meeting income requirements
  • Acthar Co-pay Card: commercial copay support; eligible commercially-insured patients (excludes Medicare, Medicaid, federal program patients per anti-kickback rules); first dose may be available at $0 copay
  • Foundations: for Medicare patients, refer to PAN Foundation, HealthWell, Patient Advocate Foundation. Verify open disease-state funds quarterly — rare-disease and rheumatic disease funds are most relevant.
  • Web: acthar.com · mallinckrodt.com
Need to model what a specific patient will actually pay after copay assistance, deductible, coinsurance, and OOP max? Run a CareCost Estimate — J0801/J0802 pre-loaded.
Phase 4 Fix problems Unit conversion, J0801/J0802 stacking, PA documentation, and prior corticosteroid history are the top denial categories.

Common denials & how to fix them

Denial reasonCommon causeFix
Excess units billedJ0801 billed in USP units (e.g., 80 units instead of 1)Resubmit with J0801 × 1 + J0802 × 1 for an 80 USP unit dose. Each J0801 unit = 40 USP units.
J0802 billed without J0801Add-on code without base codeJ0801 must always be on the claim alongside J0802 for the same administration.
Prior corticosteroid trial not documentedPA submitted without standard steroid failure historyDocument prednisone or methylprednisolone trial (drug, dose, duration, response or contraindication). For MS, document IV methylprednisolone failure.
Wrong admin code (96365)IV infusion code billed for SC/IM injectionResubmit with 96372. Acthar is SC/IM only; never IV.
Indication not on FDA labelOff-label use without compendium supportActhar's broad on-label list rarely requires compendium use; verify ICD-10 maps to one of the 10+ FDA indications.
PA criteria not met (specific indication)e.g., MS without methylprednisolone failure documentationSubmit complete PA with indication-specific clinical evidence per the payer's medical policy.
Multi-dose vial waste reporting missingVial expired with unused contents; JW not reportedTrack per-vial in-use BUD; report discarded units on JW line per MAC policy.
Live vaccine concern flaggedPatient received live vaccine while on ActharVaccinations (especially live) are contraindicated during Acthar therapy; document timing in claim notes.

Frequently asked questions

What is the HCPCS code for Acthar Gel?

Acthar Gel (repository corticotropin injection) is billed under HCPCS J0801 — "Injection, Acthar Gel, up to 40 units." This is one of the most error-prone unit definitions in the HCPCS code set: 1 billable unit of J0801 = 40 USP units of corticotropin. So a 40 USP unit dose is billed as 1 unit of J0801; an 80 USP unit dose is billed as 1 unit of J0801 plus 1 unit of J0802 ("each additional 40 units").

What is the difference between J0801 and J0802?

J0801 covers Acthar Gel administrations of up to 40 USP units (one billable unit). J0802 covers each additional 40 USP units beyond the first 40 in a single administration. For an 80 USP unit dose: bill J0801 × 1 + J0802 × 1. For a 120 USP unit dose: bill J0801 × 1 + J0802 × 2. Both codes are billed together for any administration exceeding 40 USP units; J0801 is always the base.

How many units do I bill for an 80 USP unit Acthar Gel dose?

For an 80 USP unit SC or IM dose, bill J0801 × 1 unit AND J0802 × 1 unit. Do not bill J0801 × 2 units — that is a common error that triggers payer denial.

What administration CPT do I use for Acthar Gel?

CPT 96372 — "Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular." Acthar Gel is SC or IM only. Do NOT bill 96365/96366 (IV infusion codes) or 96370/96371 (SC pump infusion codes). Acthar is contraindicated for IV administration.

What is the Medicare reimbursement for Acthar Gel?

For Q2 2026, the Medicare Part B payment limit for J0801 is $4,094.259 per billable unit (= 40 USP units), or roughly $102.36 per USP unit (ASP + 6%). An 80 USP unit dose reimburses at approximately $8,188.52 per administration; a 120 USP unit dose at approximately $12,282.78.

Why are payers so aggressive on Acthar prior auth?

Acthar Gel pricing increased ~100,000% from 2001 to 2018 (roughly $40 to over $40,000 per vial), making it one of the most-scrutinized drugs in US billing. UnitedHealthcare, Aetna, and Cigna all maintain Acthar-specific PA criteria requiring detailed indication-specific clinical justification AND documentation of standard corticosteroid (prednisone, methylprednisolone) failure or contraindication. Generic prednisone is roughly 1,000-10,000 times cheaper per course of therapy.

What are the FDA-approved indications for Acthar Gel?

Broad list: (1) acute MS exacerbations; (2) infantile spasms / West syndrome (gold standard per AAN/ChNS); (3) idiopathic or lupus nephrotic syndrome; (4) rheumatic disorders (RA, AS, PsA); (5) collagen diseases (SLE, dermatomyositis, polymyositis); (6) dermatologic disease (severe psoriasis, erythema multiforme); (7) refractory severe asthma / atopic dermatitis; (8) severe ophthalmic inflammation; (9) symptomatic sarcoidosis; (10) edematous states.

Is Acthar Gel given subcutaneously or intramuscularly?

Either — both SC and IM are FDA-labeled. Acthar must NEVER be given intravenously (contraindicated; severe hypersensitivity risk). Most outpatient scenarios use SC for self/caregiver administration. Both routes use CPT 96372 for administration billing.

Reference Sources & methodology Every claim on this page is sourced. Methodology and review history below.

Source documents

  1. Acthar Gel — Official Mallinckrodt site
    Manufacturer Patient Support program, dosing, indication overview
  2. DailyMed — H.P. Acthar Gel Prescribing Information
    FDA-approved label, repository corticotropin injection (Mallinckrodt)
  3. CMS — Medicare Part B Drug ASP Pricing File
    Q2 2026 quarterly file, effective April 1 – June 30, 2026
  4. SEER CanMED — HCPCS J0801 reference
  5. SEER CanMED — HCPCS J0802 reference
  6. AAN/ChNS — Infantile Spasms / West syndrome guideline
    Establishes ACTH (and vigabatrin) as first-line therapy
  7. AAN MS guidelines — acute relapse management
    IV methylprednisolone is standard first-line for acute MS exacerbations
  8. ACR — Rheumatic disease practice guidelines
  9. KDIGO — Glomerular Diseases (nephrotic syndrome) guideline
  10. UnitedHealthcare — Acthar Gel medical policy
  11. Aetna CPB — Repository corticotropin (Acthar Gel)
  12. Cigna — Acthar Gel coverage position
  13. FDA National Drug Code Directory

About this page

We maintain this page as a living reference. Medicare ASP pricing is bound to our underlying CareCost data layer and refreshes automatically when CMS publishes new quarterly files. Coding and policy content is reviewed at least quarterly and updated whenever a source document changes.

Found an error? Email hello@carecostestimate.com.

Refresh cadence

ElementCadenceHow it's refreshed
Medicare ASP pricing (J0801, J0802)QuarterlyAuto-bound to CareCost ASP layer; updates on CMS file release.
Payer policies (UHC, Aetna, Cigna, BCBS)Semi-annualManual review against published payer Acthar-specific medical policy documents.
HCPCS / CPT / modifier rules + multi-dose vial guidanceAnnualReviewed against CMS HCPCS quarterly files, AMA CPT releases, and MAC LCD updates.
NDC, dosing, FDA label, indication listEvent-drivenTied to manufacturer document version + FDA label revision date.

Reviewer

Pending SME review. This page is staff-authored from primary sources (FDA, CMS, manufacturer, payer documents — all linked above). Editorial review in progress. Until that review is complete, treat this as a draft reference and verify each cited source for high-stakes claims.

Change log

  • — Initial publication. ASP data: Q2 2026. Manufacturer source: Mallinckrodt 2025. FDA label: most recent revision. 10+ FDA-approved indications. J0801/J0802 dual-code structure documented. Payer-side aggressive PA scrutiny + generic prednisone alternative cost comparison.

Methodology

Every claim on this page is sourced inline. Pricing reflects the current CMS Part B Drug ASP Pricing File. Payer policies are read directly from each payer's published medical/pharmacy policy documents. Indication list is verified against the current FDA label revision. We do not paraphrase from billing-software vendor blogs.

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