ICD-10 Code M00.112 – Pneumococcal arthritis, left shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.112 – Pneumococcal arthritis, left shoulder
What it is
M00.112 identifies pneumococcal arthritis affecting the left shoulder joint. Use it when Streptococcus pneumoniae is documented as the cause of a septic joint in that location.
Clinical signs
Typical findings include acute joint pain, swelling, warmth, and reduced range of motion in the left shoulder. Fever and systemic illness may occur; clinical features vary, so refer to documentation.
When to use this code
Use M00.112 when the provider documents pneumococcal septic arthritis of the left shoulder, or clearly identifies Streptococcus pneumoniae as the infecting organism. This code is appropriate for confirmed infection of that specific joint, not for suspected cases. Check documentation if the organism or laterality is unclear.
Do not use for
Do not use this code for noninfectious arthritis, unspecified septic arthritis, or pneumococcal infection in another joint. If the left shoulder or pneumococcal cause is not documented, choose a more specific or unspecified code as supported by the record.
Coding tip
Verify both the organism and the left-shoulder laterality in the note before assigning M00.112.