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S81 Open wound of knee and lower leg

ICD-10-CM category S81 sits in Chapter 20 (External causes of morbidity, V00-Y99). It contains 108 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

S81.0 Open wound of kneeS81.00 Unspecified open wound of kneeS81.001 Unspecified open wound, right kneeS81.002 Unspecified open wound, left kneeS81.009 Unspecified open wound, unspecified kneeS81.01 Laceration without foreign body of kneeS81.011 Laceration without foreign body, right kneeS81.012 Laceration without foreign body, left kneeS81.019 Laceration without foreign body, unspecified kneeS81.02 Laceration with foreign body of kneeS81.021 Laceration with foreign body, right kneeS81.022 Laceration with foreign body, left kneeS81.029 Laceration with foreign body, unspecified kneeS81.03 Puncture wound without foreign body of kneeS81.031 Puncture wound without foreign body, right kneeS81.032 Puncture wound without foreign body, left kneeS81.039 Puncture wound without foreign body, unspecified kneeS81.04 Puncture wound with foreign body of kneeS81.041 Puncture wound with foreign body, right kneeS81.042 Puncture wound with foreign body, left kneeS81.049 Puncture wound with foreign body, unspecified kneeS81.05 Open bite of kneeS81.051 Open bite, right kneeS81.052 Open bite, left kneeS81.059 Open bite, unspecified kneeS81.8 Open wound of lower legS81.80 Unspecified open wound of lower legS81.801 Unspecified open wound, right lower legS81.802 Unspecified open wound, left lower legS81.809 Unspecified open wound, unspecified lower legS81.81 Laceration without foreign body of lower legS81.811 Laceration without foreign body, right lower legS81.812 Laceration without foreign body, left lower legS81.819 Laceration without foreign body, unspecified lower legS81.82 Laceration with foreign body of lower legS81.821 Laceration with foreign body, right lower legS81.822 Laceration with foreign body, left lower legS81.829 Laceration with foreign body, unspecified lower legS81.83 Puncture wound without foreign body of lower legS81.831 Puncture wound without foreign body, right lower leg

Billable codes in S81

CodeDescription
S81.001AUnspecified open wound, right knee, initial encounter
S81.001DUnspecified open wound, right knee, subsequent encounter
S81.001SUnspecified open wound, right knee, sequela
S81.002AUnspecified open wound, left knee, initial encounter
S81.002DUnspecified open wound, left knee, subsequent encounter
S81.002SUnspecified open wound, left knee, sequela
S81.009AUnspecified open wound, unspecified knee, initial encounter
S81.009DUnspecified open wound, unspecified knee, subsequent encounter
S81.009SUnspecified open wound, unspecified knee, sequela
S81.011ALaceration without foreign body, right knee, initial encounter
S81.011DLaceration without foreign body, right knee, subsequent encounter
S81.011SLaceration without foreign body, right knee, sequela
S81.012ALaceration without foreign body, left knee, initial encounter
S81.012DLaceration without foreign body, left knee, subsequent encounter
S81.012SLaceration without foreign body, left knee, sequela
S81.019ALaceration without foreign body, unspecified knee, initial encounter
S81.019DLaceration without foreign body, unspecified knee, subsequent encounter
S81.019SLaceration without foreign body, unspecified knee, sequela
S81.021ALaceration with foreign body, right knee, initial encounter
S81.021DLaceration with foreign body, right knee, subsequent encounter
S81.021SLaceration with foreign body, right knee, sequela
S81.022ALaceration with foreign body, left knee, initial encounter
S81.022DLaceration with foreign body, left knee, subsequent encounter
S81.022SLaceration with foreign body, left knee, sequela
S81.029ALaceration with foreign body, unspecified knee, initial encounter
S81.029DLaceration with foreign body, unspecified knee, subsequent encounter
S81.029SLaceration with foreign body, unspecified knee, sequela
S81.031APuncture wound without foreign body, right knee, initial encounter
S81.031DPuncture wound without foreign body, right knee, subsequent encounter
S81.031SPuncture wound without foreign body, right knee, sequela
S81.032APuncture wound without foreign body, left knee, initial encounter
S81.032DPuncture wound without foreign body, left knee, subsequent encounter
S81.032SPuncture wound without foreign body, left knee, sequela
S81.039APuncture wound without foreign body, unspecified knee, initial encounter
S81.039DPuncture wound without foreign body, unspecified knee, subsequent encounter
S81.039SPuncture wound without foreign body, unspecified knee, sequela
S81.041APuncture wound with foreign body, right knee, initial encounter
S81.041DPuncture wound with foreign body, right knee, subsequent encounter
S81.041SPuncture wound with foreign body, right knee, sequela
S81.042APuncture wound with foreign body, left knee, initial encounter
S81.042DPuncture wound with foreign body, left knee, subsequent encounter
S81.042SPuncture wound with foreign body, left knee, sequela
S81.049APuncture wound with foreign body, unspecified knee, initial encounter
S81.049DPuncture wound with foreign body, unspecified knee, subsequent encounter
S81.049SPuncture wound with foreign body, unspecified knee, sequela
S81.051AOpen bite, right knee, initial encounter
S81.051DOpen bite, right knee, subsequent encounter
S81.051SOpen bite, right knee, sequela
S81.052AOpen bite, left knee, initial encounter
S81.052DOpen bite, left knee, subsequent encounter
S81.052SOpen bite, left knee, sequela
S81.059AOpen bite, unspecified knee, initial encounter
S81.059DOpen bite, unspecified knee, subsequent encounter
S81.059SOpen bite, unspecified knee, sequela
S81.801AUnspecified open wound, right lower leg, initial encounter
S81.801DUnspecified open wound, right lower leg, subsequent encounter
S81.801SUnspecified open wound, right lower leg, sequela
S81.802AUnspecified open wound, left lower leg, initial encounter
S81.802DUnspecified open wound, left lower leg, subsequent encounter
S81.802SUnspecified open wound, left lower leg, sequela
S81.809AUnspecified open wound, unspecified lower leg, initial encounter
S81.809DUnspecified open wound, unspecified lower leg, subsequent encounter
S81.809SUnspecified open wound, unspecified lower leg, sequela
S81.811ALaceration without foreign body, right lower leg, initial encounter
S81.811DLaceration without foreign body, right lower leg, subsequent encounter
S81.811SLaceration without foreign body, right lower leg, sequela
S81.812ALaceration without foreign body, left lower leg, initial encounter
S81.812DLaceration without foreign body, left lower leg, subsequent encounter
S81.812SLaceration without foreign body, left lower leg, sequela
S81.819ALaceration without foreign body, unspecified lower leg, initial encounter
S81.819DLaceration without foreign body, unspecified lower leg, subsequent encounter
S81.819SLaceration without foreign body, unspecified lower leg, sequela
S81.821ALaceration with foreign body, right lower leg, initial encounter
S81.821DLaceration with foreign body, right lower leg, subsequent encounter
S81.821SLaceration with foreign body, right lower leg, sequela
S81.822ALaceration with foreign body, left lower leg, initial encounter
S81.822DLaceration with foreign body, left lower leg, subsequent encounter
S81.822SLaceration with foreign body, left lower leg, sequela
S81.829ALaceration with foreign body, unspecified lower leg, initial encounter
S81.829DLaceration with foreign body, unspecified lower leg, subsequent encounter
S81.829SLaceration with foreign body, unspecified lower leg, sequela
S81.831APuncture wound without foreign body, right lower leg, initial encounter
S81.831DPuncture wound without foreign body, right lower leg, subsequent encounter
S81.831SPuncture wound without foreign body, right lower leg, sequela
S81.832APuncture wound without foreign body, left lower leg, initial encounter
S81.832DPuncture wound without foreign body, left lower leg, subsequent encounter
S81.832SPuncture wound without foreign body, left lower leg, sequela
S81.839APuncture wound without foreign body, unspecified lower leg, initial encounter
S81.839DPuncture wound without foreign body, unspecified lower leg, subsequent encounter
S81.839SPuncture wound without foreign body, unspecified lower leg, sequela
S81.841APuncture wound with foreign body, right lower leg, initial encounter
S81.841DPuncture wound with foreign body, right lower leg, subsequent encounter
S81.841SPuncture wound with foreign body, right lower leg, sequela
S81.842APuncture wound with foreign body, left lower leg, initial encounter
S81.842DPuncture wound with foreign body, left lower leg, subsequent encounter
S81.842SPuncture wound with foreign body, left lower leg, sequela
S81.849APuncture wound with foreign body, unspecified lower leg, initial encounter
S81.849DPuncture wound with foreign body, unspecified lower leg, subsequent encounter
S81.849SPuncture wound with foreign body, unspecified lower leg, sequela
S81.851AOpen bite, right lower leg, initial encounter
S81.851DOpen bite, right lower leg, subsequent encounter
S81.851SOpen bite, right lower leg, sequela
S81.852AOpen bite, left lower leg, initial encounter
S81.852DOpen bite, left lower leg, subsequent encounter
S81.852SOpen bite, left lower leg, sequela
S81.859AOpen bite, unspecified lower leg, initial encounter
S81.859DOpen bite, unspecified lower leg, subsequent encounter
S81.859SOpen bite, unspecified lower leg, sequela

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