M1203 – Ace inhibitor or arb therapy not prescribed during the measurement period, reason not given
HCPCS Level II code · M codes: Medical Services and Quality Measures
HCPCS codeM1203
- Long description
- Ace inhibitor or arb therapy not prescribed during the measurement period, reason not given
- Short description
- No rsn ace-i/arb rx
- Pricing indicator
00Not separately priced by Part B (bundled, not covered or Part A only)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
Z2Undefined codes- Added
- January 1, 2023
- Last change
- January 1, 2023 – No change
Frequently asked questions
What is HCPCS code M1203?
M1203 is a HCPCS Level II code for ace inhibitor or arb therapy not prescribed during the measurement period, reason not given.
Does Medicare cover M1203?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby M codes
- M1195 – Surgical pathology reports that do not contain impression or conclusion of or recommendation for testing of mmr by immunohistochemistry, msi by dna-based testing status, or both, reason not given
- M1196 – Initial (index visit) numeric rating scale (nrs), visual rating scale (vrs), or itchyquant assessment score of greater than or equal to 4
- M1197 – Itch severity assessment score is reduced by 3 or more points from the initial (index) assessment score to the follow-up visit score
- M1198 – Itch severity assessment score was not reduced by at least 3 points from initial (index) score to the follow-up visit score or assessment was not completed during the follow-up encounter
- M1199 – Patients receiving rrt
- M1200 – Ace inhibitor (ace-i) or arb therapy prescribed during the measurement period
- M1201 – Documentation of medical reason(s) for not prescribing ace inhibitor (ace-i) or arb therapy during the measurement period (e.g., pregnancy, history of angioedema to ace-i, other allergy to ace-i and arb, hyperkalemia or history of hyperkalemia while on ace-i or arb therapy, acute kidney injury due to ace-i or arb therapy), other medical reasons)
- M1202 – Documentation of patient reason(s) for not prescribing ace inhibitor or arb therapy during the measurement period, (e.g., patient declined, other patient reasons)
- M1204 – Initial (index visit) numeric rating scale (nrs), visual rating scale (vrs), or itchyquant assessment score of greater than or equal to 4
- M1205 – Itch severity assessment score is reduced by 3 or more points from the initial (index) assessment score to the follow-up visit score
- M1206 – Itch severity assessment score was not reduced by at least 3 points from initial (index) score to the follow-up visit score or assessment was not completed during the follow-up encounter
- M1207 – Patient is screened for food insecurity, housing instability, transportation needs, utility difficulties, and interpersonal safety
- M1208 – Patient is not screened for food insecurity, housing instability, transportation needs, utility difficulties, and interpersonal safety
- M1209 – At least two orders for high-risk medications from the same drug class, (table 4), without appropriate diagnoses
- M1210 – At least two orders for high-risk medications from the same drug class, (table 4), not ordered
- M1211 – Most recent glycemic status assessment (hba1c or gmi) level > 9.0%
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.