ICD-10-CM category

S86 Injury of muscle and tendon at lower leg level

S86 is a category, not a billable code. Report one of the 216 complete codes below.

S86.0…

36 codes

S86.1…

36 codes

S86.101AUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter
S86.101DUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, subsequent encounter
S86.101SUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, sequela
S86.102AUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, initial encounter
S86.102DUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, subsequent encounter
S86.102SUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, sequela
S86.109AUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, initial encounter
S86.109DUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, subsequent encounter
S86.109SUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, sequela
S86.111AStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter
S86.111DStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, subsequent encounter
S86.111SStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, sequela
S86.112AStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, initial encounter
S86.112DStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, subsequent encounter
S86.112SStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, sequela
S86.119AStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, initial encounter
S86.119DStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, subsequent encounter
S86.119SStrain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, sequela
S86.121ALaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter
S86.121DLaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, subsequent encounter
S86.121SLaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, sequela
S86.122ALaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, initial encounter
S86.122DLaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, subsequent encounter
S86.122SLaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, sequela
S86.129ALaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, initial encounter
S86.129DLaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, subsequent encounter
S86.129SLaceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, sequela
S86.191AOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter
S86.191DOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, subsequent encounter
S86.191SOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, sequela
S86.192AOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, initial encounter
S86.192DOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, subsequent encounter
S86.192SOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, sequela
S86.199AOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, initial encounter
S86.199DOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, subsequent encounter
S86.199SOther injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, sequela

S86.2…

36 codes

S86.3…

36 codes

S86.8…

36 codes

S86.9…

36 codes

Outside the US? S86 in the international WHO ICD-10 lists its inclusion and exclusion notes.

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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.

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