ICD-10 Code M02.349 – Reiter’s disease, unspecified hand (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.349 – Reiter’s disease, unspecified hand
What it is
M02.349 identifies reactive arthritis, also called Reiter’s disease, affecting an unspecified hand. Use it when the record documents this diagnosis but does not specify which hand.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include joint pain, swelling, and stiffness in the hand, with an inflammatory pattern consistent with reactive arthritis.
When to use this code
Use this code when the provider documents Reiter’s disease or reactive arthritis involving a hand, but laterality is not stated. It is also appropriate when the note confirms hand involvement without identifying right or left. Check documentation if the record is unclear or uses a different joint diagnosis.
Do not use for
Do not use this code for reactive arthritis affecting a specified hand; choose the laterality-specific code instead. Do not assign it when the condition is another inflammatory arthropathy or when the hand is not involved.
Coding tip
If the chart says only “hand” or “unspecified hand,” you may code M02.349, but laterality documentation should always be reviewed first.