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Descriptors and administrative fields exactly as published in the CMS HCPCS quarterly file.
Billing context: M-codes
Units are reported in multiples of the dosage in the code descriptor.
One HCPCS billing unit of M0201
The descriptor does not state a numeric dosage per unit.
| Setting | Max units / day | Adjudication (MAI) | CMS rationale |
|---|---|---|---|
| Practitioner services (professional claims) | 1 | 2 Date of Service Edit: PolicyDate-of-service edit (policy): units above the value for the same patient and date are considered contrary to statute, regulation, or CMS guidance. | Code Descriptor / CPT Instruction |
| Facility outpatient hospital services | 1 | 2 Date of Service Edit: PolicyDate-of-service edit (policy): units above the value for the same patient and date are considered contrary to statute, regulation, or CMS guidance. | Code Descriptor / CPT Instruction |
An MUE is the most units CMS expects for this code for one patient on one date of service by the same provider in most correctly reported claims. CMS MUE program
Medicare Part B drug payment limits per billing unit, by quarter, from the CMS payment limit (ASP) files.
No authoritative public data was located for this field. CMS did not publish a Part B payment limit for M0201 in the quarters imported.
No authoritative public data was located for this field.
Medicare hospital outpatient (OPPS) · Q4 2026
S See CMS Addendum D1
$36.850 per unit · APC 9399 · copayment $0.000 per unit
Washington Apple Health · professional claims
Not on HCA's professional administered drug fee schedule.
AAC = actual acquisition cost, based on NDC or invoice; BR = by report; NC = not covered; DC = not covered, see a different code; DP = covered under another program (see comments); PA = prior authorization; EPA = expedited prior authorization (see the billing guide); CPA = contractor prior authorization (Qualis). For professional claims; hospital-administered drugs are paid under HCA's outpatient (OPPS/EAPG) rules.
Packages CMS assigns to this code in its NDC–HCPCS crosswalks, with billable units per package. Only official crosswalk rows are shown.
No CMS NDC–HCPCS crosswalk rows were located. CMS notes its crosswalks are not a comprehensive list of all NDCs.
Medicare coverage is set nationally (NCDs) and by each Medicare Administrative Contractor (LCDs and Billing & Coding articles). These links open the official documents.
Verification neededCodeRx links to coverage documents instead of copying them: CMS distributes their code lists under AMA, ADA, and AHA license terms that limit reuse. Medicare Advantage, Medicaid, and commercial plans set their own coverage and prior-authorization rules.
Changes detected between the CMS quarterly HCPCS files CodeRx has imported.
| Quarterly file | Change | CMS action code | Details |
|---|---|---|---|
| Q1 2024 | Descriptor changed | C — Long description changed | Now: Administration of pneumococcal, influenza, hepatitis b, and/or covid-19 vaccine inside a patient's home; reported only once per individual home per date of service when such vaccine administration(s) are performed at the patient's homeBefore: Covid-19 vaccine administration inside a patient's home; reported only once per individual home per date of service when only covid-19 vaccine administration is performed at the patient's home |
| Q1 2024 | Dates changed | C — Long description changed | Added Jun 8, 2021 · action effective Jan 1, 2024 · termination — |
| Q1 2023 | In earliest ingested file | N — No maintenance | Added date Jun 8, 2021 |
All imported releases, checksums, and import reports are listed on the data sources page.
Disclaimer. This application provides informational coding and reimbursement reference data. It does not constitute legal, clinical, coding, or billing advice. Codes, payment amounts, payer rules, and coverage policies can change. Verify all information with current CMS publications, the applicable payer, and your organization’s compliance policies before submitting a claim. CodeRx is not affiliated with or endorsed by CMS, FDA, Medicare, or any payer.