HCPCS Level II · Medical services and quality measures
M1145Most favored nation (mfn) model drug add-on amount, per dose, (do not bill with line items that have the jw modifier)
Terminated 02/27/2022
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About M1145
M1145 is an HCPCS Level II code in the M series (medical services and quality measures), describing most favored nation (mfn) model drug add-on amount, per dose, (do not bill with line items that have the jw modifier).
It was added to HCPCS effective 01/01/2021, and its current record took effect 02/28/2022.
It was terminated on 02/27/2022 and can't be billed for later dates of service.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Mfn drug add-on, per dose
- Date added
- 01/01/2021
- Action effective
- 02/28/2022
- Termination date
- 02/27/2022
- BETOS
- Z2
Related M11xx codes
- M1106The start of an episode of care documented in the medical record
- M1107Documentation stating patient has a diagnosis of a degenerative neurological condition such as als, ms, or parkinson's diagnosed at any time before or during the episode of care
- M1108Ongoing care not clinically indicated because the patient needed a home program only, referral to another provider or facility, or consultation only, as documented in the medical record
- M1109Ongoing care not medically possible because the patient was discharged early due to specific medical events, documented in the medical record, such as the patient became hospitalized or scheduled for surgery
- M1110Ongoing care not possible because the patient self-discharged early (e.g., financial or insurance reasons, transportation problems, or reason unknown)
- M1111The start of an episode of care documented in the medical record
- M1112Documentation stating patient has a diagnosis of a degenerative neurological condition such as als, ms, or parkinson's diagnosed at any time before or during the episode of care
- M1113Ongoing care not clinically indicated because the patient needed a home program only, referral to another provider or facility, or consultation only, as documented in the medical record
- M1114Ongoing care not medically possible because the patient was discharged early due to specific medical events, documented in the medical record, such as the patient became hospitalized or scheduled for surgery
- M1115Ongoing care not possible because the patient self-discharged early (e.g., financial or insurance reasons, transportation problems, or reason unknown)
- M1116The start of an episode of care documented in the medical record
- M1117Documentation stating patient has a diagnosis of a degenerative neurological condition such as als, ms, or parkinson's diagnosed at any time before or during the episode of care
Common questions about M1145
Is HCPCS M1145 still valid?
- No. M1145 was terminated on 02/27/2022.
Does Medicare cover M1145?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.