M60.009 Infective myositis, unspecified site

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

Applies from M60 Myositis

Excludes2 (not included here)

• inclusion body myositis [IBM] (G72.41)

Applies from M60.0 Infective myositis

Applicable to

• Tropical pyomyositis

Use additional code

• code (B95-B97) to identify infectious agent

MS-DRG index

Defines the logic of DRG(s) 557-558 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 040.81 Tropical pyomyositis (approximate)
• 728.0 Infective myositis (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Code annotations containing back-references to M60.009

Back-references to M60

• Type 2 Excludes: G71 Primary disorders of muscles ("myositis (M60.-)")
• Type 1 Excludes: G72 Other and unspecified myopathies ("myositis (M60.-)")
• Type 1 Excludes: M79.1 Myalgia ("myositis (M60.-)")

Diagnosis Index entries for M60.009

• Myositis › infective

Nearby codes

• M60.001 Infective myositis, unspecified left arm
• M60.002 Infective myositis, unspecified arm
• M60.003 Infective myositis, unspecified right leg
• M60.004 Infective myositis, unspecified left leg
• M60.005 Infective myositis, unspecified leg
• M60.009 Infective myositis, unspecified site (this code)
• M60.01 Infective myositis, shoulder
• M60.011 Infective myositis, right shoulder
• M60.012 Infective myositis, left shoulder
• M60.019 Infective myositis, unspecified shoulder
• M60.02 Infective myositis, upper arm