S86.309
⚠ Non-billable (Header)Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for S86.309
Child Codes (3)
S86.309AUnspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, initial encounterS86.309DUnspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, subsequent encounterS86.309SUnspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, sequela
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CodeS86.309
BillableNo — Header code
ParentS86.30
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes10 rule(s)
Excludes20 note(s)
Child codes3
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)