HCPCS Code M1145

Most favored nation (mfn) model drug add-on amount, per dose, (do not bill with line items that have the jw modifier)
Code effective Feb 28, 2022

HCPCS Section
Medical services

M1145 is a valid 2026 HCPCS code meaning Most favored nation (mfn) model drug add-on amount, per dose, (do not bill with line items that have the jw modifier) or (Mfn drug add-on, per dose) for short. HCPCS M1145 has been effective since 02/28/2022 and applies to Medical care.

HCPCS Code Details - M1145

HCPCS Level II Code
Section M - Medical services
HCPCS Code M1145
Description

Long description:
Most favored nation (mfn) model drug add-on amount, per dose, (do not bill with line items that have the jw modifier)

Short description:
Mfn drug add-on, per dose

HCPCS Pricing indicator 00 - Physician Fee Schedule And Non-Physician Practitioners - Service not separately priced by part B (e.g., services not covered, bundled, used by Part A only, etc.)
Multiple pricing indicator 9 - Not applicable as HCPCS not priced separately by part B or value is not established
Coverage code C - Carrier judgment
BETOS2 code Z2 - Undefined codes
HCPCS Action code N - No maintenance for this code
Type of service 1 - Medical care
Effective date Effective Feb 28, 2022
Date added Added Jan 01, 2021
Termination date Feb 27, 2022

See also

  • HCPCS M1144 · Ongoing care not indicated, patient seen only 1-2 visits (e.g., home program only, referred to another provider or facility, consultation only

  • HCPCS M1146 · Ongoing 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

1 Two-digit numeric codes are Level I code modifiers copyrighted© by the American Medical Association's Current Procedural Terminology (CPT).

2 BETOS stands for “Berenson-Eggers Type Of Service”

HCPCS Level II codes and descriptors are approved and maintained jointly by the alpha-numeric editorial panel (consisting of CMS, the Health Insurance Association of America, and the Blue Cross and Blue Shield Association). — Updated 6/24/2026

CPT® is a registered trademark of the American Medical Association (AMA). All rights reserved.