ICD-10-CM 2027
ICD-10 code for Palindromic rheumatism
From the official ICD-10-CM alphabetic index entry “Rheumatism (articular) (neuralgic) (nonarticular) › palindromic (any site)”. Page updated September 29, 2026.
About coding Palindromic rheumatism
The ICD-10-CM code for Palindromic rheumatism is M12.30 (Palindromic rheumatism, unspecified site). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M12.30.
Within M12.3, choose M12.30 (unspecified site) only when documentation doesn't support a more specific option: shoulder (M12.31), elbow (M12.32), wrist (M12.33), hand (M12.34), hip (M12.35), knee (M12.36), ankle and foot (M12.37), other specified site (M12.38) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Palindromic rheumatism codes (official index)
- ankle M12.37 — Palindromic rheumatism, ankle and foot
- elbow M12.32 — Palindromic rheumatism, elbow
- foot joint M12.37 — Palindromic rheumatism, ankle and foot
- hand joint M12.34 — Palindromic rheumatism, hand
- hip M12.35 — Palindromic rheumatism, hip
- knee M12.36 — Palindromic rheumatism, knee
- multiple site M12.39 — Palindromic rheumatism, multiple sites
- shoulder M12.31 — Palindromic rheumatism, shoulder
- specified joint NEC M12.38 — Palindromic rheumatism, other specified site
- vertebrae M12.38 — Palindromic rheumatism, other specified site
- wrist M12.33 — Palindromic rheumatism, wrist
Common questions about Palindromic rheumatism ICD-10 codes
What is the ICD-10 code for Palindromic rheumatism?
- M12.30 — Palindromic rheumatism, unspecified site. More specific codes apply when the documentation supports them: M12.37, M12.32, M12.37, M12.34 and others below.
What is the ICD-10 code for ankle palindromic rheumatism?
- M12.37 — Palindromic rheumatism, ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for elbow palindromic rheumatism?
- M12.32 — Palindromic rheumatism, elbow (header code; choose a more specific subcode).
What is the ICD-10 code for foot joint palindromic rheumatism?
- M12.37 — Palindromic rheumatism, ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for hand joint palindromic rheumatism?
- M12.34 — Palindromic rheumatism, hand (header code; choose a more specific subcode).
What is the ICD-10 code for hip palindromic rheumatism?
- M12.35 — Palindromic rheumatism, hip (header code; choose a more specific subcode).
What is the ICD-10 code for knee palindromic rheumatism?
- M12.36 — Palindromic rheumatism, knee (header code; choose a more specific subcode).
Is M12.30 billable?
- Yes. M12.30 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M12.30 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M12.30 as a principal diagnosis.
Is M12.30 a CC or MCC?
- No. M12.30 is neither a CC nor an MCC under MS-DRG v44.0.