ICD-10 Code M02.339 – Reiter’s Disease, Unspecified Wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.339 – Reiter’s disease, unspecified wrist
What it is
This code identifies reactive arthritis, also called Reiter’s disease, affecting the wrist without a more specific side or detail. Use it when the record names the condition but does not specify additional features.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include inflammatory joint pain, swelling, and stiffness, with the wrist among the affected joints.
When to use this code
Use this code when the clinician documents Reiter’s disease or reactive arthritis and the wrist is involved, but laterality is not stated. It also fits when the note confirms wrist involvement without a more specific diagnosis detail. Check documentation if the record suggests another inflammatory arthropathy.
Do not use for
Do not use this code if the wrist condition is documented as another type of arthritis, such as rheumatoid or gouty arthritis. Also avoid it when the chart specifies a different site or a more precise laterality code.
Coding tip
Assign the unspecified code only when the provider documents wrist involvement but does not identify right or left.