M60.169 Interstitial myositis, unspecified lower leg

Billable ICD-10-CM code, FY2026.

Applies from M60 Myositis

Excludes2 (not included here)

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

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 728.81 Interstitial myositis (approximate)

Code annotations containing back-references to M60.169

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.-)")

Nearby codes

• M60.152 Interstitial myositis, left thigh
• M60.159 Interstitial myositis, unspecified thigh
• M60.16 Interstitial myositis, lower leg
• M60.161 Interstitial myositis, right lower leg
• M60.162 Interstitial myositis, left lower leg
• M60.169 Interstitial myositis, unspecified lower leg (this code)
• M60.17 Interstitial myositis, ankle and foot
• M60.171 Interstitial myositis, right ankle and foot
• M60.172 Interstitial myositis, left ankle and foot
• M60.179 Interstitial myositis, unspecified ankle and foot
• M60.18 Interstitial myositis, other site