ICD-10 Code M00.11 – Pneumococcal arthritis, shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.11 – Pneumococcal arthritis, shoulder
What it is
M00.11 identifies septic arthritis of the shoulder caused by Streptococcus pneumoniae. It means the joint infection is specifically linked to pneumococcal bacteria.
Clinical signs
Clinical features vary; refer to documentation. Typical findings in septic arthritis include a painful, swollen, warm joint with limited range of motion, and the diagnosis should identify the shoulder and pneumococcal cause.
When to use this code
Use M00.11 when the provider documents pneumococcal infection of the shoulder joint, including septic arthritis due to Streptococcus pneumoniae. Code it from confirmed diagnoses, not from suspicion alone. If the organism or joint site is not clearly stated, check documentation.
Do not use for
Do not use this code for shoulder pain, bursitis, or noninfectious arthritis. It is also incorrect when the infection involves a different joint or when pneumococcal cause is not documented.
Coding tip
Match both elements in the note: the shoulder site and pneumococcal organism, or you risk selecting a broader or incorrect septic arthritis code.