ICD-10-CM 2027
ICD-10 code for Reiter's disease
Reiter's disease, unspecified site
From the official ICD-10-CM alphabetic index entry “Reiter's disease, syndrome, or urethritis”. Page updated September 29, 2026.
About coding Reiter's disease
The ICD-10-CM code for Reiter's disease is M02.30 (Reiter's disease, unspecified site). The official index lists 10 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M02.30.
Within M02.3, choose M02.30 (unspecified site) only when documentation doesn't support a more specific option: shoulder (M02.31), elbow (M02.32), wrist (M02.33), hand (M02.34), hip (M02.35), knee (M02.36), ankle and foot (M02.37), vertebrae (M02.38) and 1 more.
Code first underlying disease, such as: congenital syphilis [Clutton's joints] (A50.5), enteritis due to Yersinia enterocolitica (A04.6), infective endocarditis (I33.0) and viral hepatitis (B15-B19).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific Reiter's disease codes (official index)
- ankle M02.37 — Reiter's disease, ankle and foot
- elbow M02.32 — Reiter's disease, elbow
- foot joint M02.37 — Reiter's disease, ankle and foot
- hand joint M02.34 — Reiter's disease, hand
- hip M02.35 — Reiter's disease, hip
- knee M02.36 — Reiter's disease, knee
- multiple site M02.39 — Reiter's disease, multiple sites
- shoulder M02.31 — Reiter's disease, shoulder
- vertebra M02.38 — Reiter's disease, vertebrae
- wrist M02.33 — Reiter's disease, wrist
Common questions about Reiter's disease ICD-10 codes
What is the ICD-10 code for Reiter's disease?
- M02.30 — Reiter's disease, unspecified site. More specific codes apply when the documentation supports them: M02.37, M02.32, M02.37, M02.34 and others below.
What is the ICD-10 code for ankle reiter's disease?
- M02.37 — Reiter's disease, ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for elbow reiter's disease?
- M02.32 — Reiter's disease, elbow (header code; choose a more specific subcode).
What is the ICD-10 code for foot joint reiter's disease?
- M02.37 — Reiter's disease, ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for hand joint reiter's disease?
- M02.34 — Reiter's disease, hand (header code; choose a more specific subcode).
What is the ICD-10 code for hip reiter's disease?
- M02.35 — Reiter's disease, hip (header code; choose a more specific subcode).
What is the ICD-10 code for knee reiter's disease?
- M02.36 — Reiter's disease, knee (header code; choose a more specific subcode).
Is M02.30 billable?
- Yes. M02.30 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M02.30 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M02.30 as a principal diagnosis.
Is M02.30 a CC or MCC?
- M02.30 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.