ICD-10 Code M00.81 – Arthritis due to other bacteria, shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.81 – Arthritis due to other bacteria, shoulder
What it is
M00.81 identifies septic arthritis of the shoulder caused by bacteria other than those specifically classified elsewhere. Use it when the provider documents a bacterial joint infection involving the shoulder.
Clinical signs
Typical findings include acute shoulder pain, swelling, warmth, limited range of motion, and tenderness. Fever may occur, but clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states bacterial arthritis of the shoulder and does not name a different, more specific organism code. It may be supported by aspiration, culture, imaging, or provider assessment. If the organism is documented as another specific category, check documentation.
Do not use for
Do not use it for noninfectious arthritis, degenerative joint disease, or shoulder pain without a documented bacterial cause. Avoid it when the infection site or organism is coded more specifically.
Coding tip
Code the documented organism and joint site as specifically as possible, and query if the note only says “infection” or “septic joint.”