M00.09 Staphylococcal polyarthritis

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from M00 Pyogenic arthritis

Excludes2 (not included here)

• infection and inflammatory reaction due to internal joint prosthesis (T84.5-)

Applies from M00.0 Staphylococcal arthritis and polyarthritis

Use additional code

• code (B95.61-B95.8) to identify bacterial agent

Risk adjustment (HCC)

• CMS-HCC V28: HCC 92 — Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis
• CMS-HCC V22: HCC 39 — Bone/Joint/Muscle Infections/Necrosis
• ESRD V24: HCC 39

MS-DRG index

Defines the logic of DRG(s) 548-550 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 041.10 Staphylococcus infection in conditions classified elsewhere and of unspecified site, staphylococcus, unspecified (approximate)
• 711.08 Pyogenic arthritis, other specified sites (approximate)
• 711.09 Pyogenic arthritis, multiple sites (approximate)

Diagnosis Index entries for M00.09

• Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › staphylococcal › multiple site

Nearby codes

• M00.07 Staphylococcal arthritis, ankle and foot
• M00.071 Staphylococcal arthritis, right ankle and foot
• M00.072 Staphylococcal arthritis, left ankle and foot
• M00.079 Staphylococcal arthritis, unspecified ankle and foot
• M00.08 Staphylococcal arthritis, vertebrae
• M00.09 Staphylococcal polyarthritis (this code)
• M00.1 Pneumococcal arthritis and polyarthritis
• M00.10 Pneumococcal arthritis, unspecified joint
• M00.11 Pneumococcal arthritis, shoulder
• M00.111 Pneumococcal arthritis, right shoulder
• M00.112 Pneumococcal arthritis, left shoulder