ICD-10 Code M00.831 – Arthritis due to other bacteria, right wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.831 – Arthritis due to other bacteria, right wrist
What it is
M00.831 identifies a bacterial infection causing arthritis in the right wrist. Use it when the record specifically documents a non-streptococcal, non-gonococcal bacterial cause affecting that joint.
Clinical signs
Typical findings include a painful, swollen, warm wrist with reduced range of motion. Fever, joint effusion, and elevated inflammatory markers may occur, but clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents arthritis of the right wrist due to another specified bacterium and laterality is clear. It is appropriate for confirmed infectious arthritis, including cases supported by aspiration, culture, or operative findings. Check documentation if the organism is not named.
Do not use for
Do not use it for arthritis caused by viruses, fungi, or parasites, or for unspecified infectious arthritis. Do not assign it when the record only states wrist pain, swelling, or suspected infection without a documented bacterial cause.
Coding tip
Verify both the bacterial etiology and right-sided laterality before coding, and follow the provider’s exact wording.