ICD-10 Code M00.122 – Pneumococcal arthritis, left elbow (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.122 – Pneumococcal arthritis, left elbow
What it is
This code identifies a pneumococcal infection of the left elbow joint causing septic arthritis. Use it when Streptococcus pneumoniae is documented as the organism affecting that specific joint.
Clinical signs
Typical findings include a painful, swollen, warm, and limited left elbow joint. Clinical features vary; refer to documentation for organism confirmation and laterality.
When to use this code
Use this code when the provider documents pneumococcal septic arthritis of the left elbow, or confirms Streptococcus pneumoniae as the cause of joint infection. It is appropriate for inpatient, outpatient, or problem-list coding when the diagnosis is established. Check documentation if the organism or joint site is not clearly stated.
Do not use for
Do not use it for nonspecific arthritis, gout, or elbow pain without infection. Do not assign it when pneumococcal infection is documented elsewhere but not in the left elbow joint.
Coding tip
Verify both the organism and the left elbow site in the record before assigning M00.122.