ICD-10 Code M00.021 – Staphylococcal arthritis, right elbow (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.021 – Staphylococcal arthritis, right elbow
What it is
This code identifies a staphylococcal infection causing arthritis in the right elbow joint. Use it when documentation specifies the organism and the involved side.
Clinical signs
Typical findings include a painful, swollen, warm elbow with reduced range of motion. Clinical features vary; refer to documentation for confirmed septic arthritis due to Staphylococcus.
When to use this code
Use M00.021 when the provider documents staphylococcal arthritis or septic arthritis of the right elbow caused by Staphylococcus. It is appropriate when the right elbow is clearly identified as the affected joint. If laterality or organism is not stated, check documentation.
Do not use for
Do not use this code for noninfectious arthritis, unspecified septic arthritis, or infection in another joint. Do not assume staphylococcal cause without explicit documentation.
Coding tip
Verify both the organism and the right-sided joint before assigning M00.021.