S86.399
⚠ Non-billable (Header)Other 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 S86.399
Child Codes (3)
S86.399AOther injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, initial encounterS86.399DOther injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, subsequent encounterS86.399SOther injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, sequela
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CodeS86.399
BillableNo — Header code
ParentS86.39
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)