ICD-10 Code M00.15 – Pneumococcal arthritis, hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.15 – Pneumococcal arthritis, hip
What it is
M00.15 identifies a pneumococcal infection of the hip joint causing septic arthritis. Use it when Streptococcus pneumoniae is documented as the cause.
Clinical signs
Typical findings include acute hip pain, limited range of motion, swelling, and difficulty bearing weight. Fever may occur; clinical features vary, so refer to documentation.
When to use this code
Use M00.15 when the provider documents pneumococcal septic arthritis affecting the hip. It is appropriate when the organism is identified or clearly linked to the joint infection in the record.
If the chart only states septic arthritis without the organism, or the affected joint is not the hip, you should not assign this code. Check documentation for the specific site and causative organism.
Do not use for
Do not use this code for noninfectious arthritis, unspecified septic arthritis, or pneumococcal infection at another joint. Check documentation when the organism or joint site is unclear.
Coding tip
Confirm both the hip location and pneumococcal cause before coding, because the organism and joint site must be documented.