ICD-10 Code M00.03 – Staphylococcal arthritis, wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.03 – Staphylococcal arthritis, wrist
What it is
M00.03 identifies a staphylococcal infection of the wrist joint causing septic arthritis. Use it when documentation states the wrist joint is infected by Staphylococcus species.
Clinical signs
Typical findings include acute wrist pain, swelling, warmth, and reduced range of motion. Fever may occur, but clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents staphylococcal septic arthritis limited to the wrist. It applies to confirmed infection of the wrist joint, not to simple skin infection or nonspecific joint pain. If the organism or site is unclear, check documentation.
Do not use for
Do not use it for cellulitis, osteomyelitis, or arthritis caused by another organism. It is also wrong for suspected infection without documented wrist joint involvement.
Coding tip
Verify both the organism and the joint site in the note before assigning M00.03.