ICD-10 Code M02.322 – Reiter’s disease, left elbow (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.322 – Reiter’s disease, left elbow
What it is
M02.322 identifies reactive arthritis, historically called Reiter’s disease, affecting the left elbow. Use it when the provider documents this diagnosis in that specific joint.
Clinical signs
Findings may include joint pain, swelling, warmth, and reduced range of motion in the left elbow. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states Reiter’s disease or reactive arthritis involving the left elbow. It also applies when the provider links the condition to that joint in the assessment or final diagnosis. Check documentation if laterality is not explicit.
Do not use for
Do not use it for unspecified elbow involvement or for other forms of arthritis without a documented reactive arthritis diagnosis. Do not assign it if the left side is not confirmed.
Coding tip
Verify both the reactive arthritis diagnosis and left elbow laterality before coding.