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ICD-10-CM category

S81: Open wound of knee and lower leg

316 subcodes · 216 billable · Look up any code with the ICD-10 search

Codes under S81 (Open wound of knee and lower leg). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

CodeDescriptionBillable
S81.0 Open wound of knee —
S81.0 Open wound of knee —
S81.00 Unspecified open wound of knee —
S81.00 Unspecified open wound of knee —
S81.001 Unspecified open wound, right knee —
S81.001 Unspecified open wound, right knee —
S81.01 Laceration without foreign body of knee —
S81.01 Laceration without foreign body of knee —
S81.001A Unspecified open wound, right knee, initial encounter ✓
S81.001A Unspecified open wound, right knee, initial encounter ✓
S81.001D Unspecified open wound, right knee, subsequent encounter ✓
S81.001D Unspecified open wound, right knee, subsequent encounter ✓
S81.001S Unspecified open wound, right knee, sequela ✓
S81.001S Unspecified open wound, right knee, sequela ✓
S81.002 Unspecified open wound, left knee —
S81.002 Unspecified open wound, left knee —
S81.02 Laceration with foreign body of knee —
S81.02 Laceration with foreign body of knee —
S81.002A Unspecified open wound, left knee, initial encounter ✓
S81.002A Unspecified open wound, left knee, initial encounter ✓
S81.002D Unspecified open wound, left knee, subsequent encounter ✓
S81.002D Unspecified open wound, left knee, subsequent encounter ✓
S81.002S Unspecified open wound, left knee, sequela ✓
S81.002S Unspecified open wound, left knee, sequela ✓
S81.03 Puncture wound without foreign body of knee —
S81.03 Puncture wound without foreign body of knee —
S81.04 Puncture wound with foreign body of knee —
S81.04 Puncture wound with foreign body of knee —
S81.05 Open bite of knee —
S81.05 Open bite of knee —
S81.8 Open wound of lower leg —
S81.8 Open wound of lower leg —
S81.009 Unspecified open wound, unspecified knee —
S81.009 Unspecified open wound, unspecified knee —
S81.009A Unspecified open wound, unspecified knee, initial encounter ✓
S81.009A Unspecified open wound, unspecified knee, initial encounter ✓
S81.009D Unspecified open wound, unspecified knee, subsequent encounter ✓
S81.009D Unspecified open wound, unspecified knee, subsequent encounter ✓
S81.009S Unspecified open wound, unspecified knee, sequela ✓
S81.009S Unspecified open wound, unspecified knee, sequela ✓
S81.011 Laceration without foreign body, right knee —
S81.011 Laceration without foreign body, right knee —
S81.011A Laceration without foreign body, right knee, initial encounter ✓
S81.011A Laceration without foreign body, right knee, initial encounter ✓
S81.011D Laceration without foreign body, right knee, subsequent encounter ✓
S81.011D Laceration without foreign body, right knee, subsequent encounter ✓
S81.011S Laceration without foreign body, right knee, sequela ✓
S81.011S Laceration without foreign body, right knee, sequela ✓
S81.012 Laceration without foreign body, left knee —
S81.012 Laceration without foreign body, left knee —
S81.012A Laceration without foreign body, left knee, initial encounter ✓
S81.012A Laceration without foreign body, left knee, initial encounter ✓
S81.012D Laceration without foreign body, left knee, subsequent encounter ✓
S81.012D Laceration without foreign body, left knee, subsequent encounter ✓
S81.012S Laceration without foreign body, left knee, sequela ✓
S81.012S Laceration without foreign body, left knee, sequela ✓
S81.019 Laceration without foreign body, unspecified knee —
S81.019 Laceration without foreign body, unspecified knee —
S81.019A Laceration without foreign body, unspecified knee, initial encounter ✓
S81.019A Laceration without foreign body, unspecified knee, initial encounter ✓
S81.019D Laceration without foreign body, unspecified knee, subsequent encounter ✓
S81.019D Laceration without foreign body, unspecified knee, subsequent encounter ✓
S81.019S Laceration without foreign body, unspecified knee, sequela ✓
S81.019S Laceration without foreign body, unspecified knee, sequela ✓
S81.021 Laceration with foreign body, right knee —
S81.021 Laceration with foreign body, right knee —
S81.021A Laceration with foreign body, right knee, initial encounter ✓
S81.021A Laceration with foreign body, right knee, initial encounter ✓
S81.021D Laceration with foreign body, right knee, subsequent encounter ✓
S81.021D Laceration with foreign body, right knee, subsequent encounter ✓
S81.021S Laceration with foreign body, right knee, sequela ✓
S81.021S Laceration with foreign body, right knee, sequela ✓
S81.022 Laceration with foreign body, left knee —
S81.022 Laceration with foreign body, left knee —
S81.022A Laceration with foreign body, left knee, initial encounter ✓
S81.022A Laceration with foreign body, left knee, initial encounter ✓
S81.022D Laceration with foreign body, left knee, subsequent encounter ✓
S81.022D Laceration with foreign body, left knee, subsequent encounter ✓
S81.022S Laceration with foreign body, left knee, sequela ✓
S81.022S Laceration with foreign body, left knee, sequela ✓
S81.029 Laceration with foreign body, unspecified knee —
S81.029 Laceration with foreign body, unspecified knee —
S81.029A Laceration with foreign body, unspecified knee, initial encounter ✓
S81.029A Laceration with foreign body, unspecified knee, initial encounter ✓
S81.029D Laceration with foreign body, unspecified knee, subsequent encounter ✓
S81.029D Laceration with foreign body, unspecified knee, subsequent encounter ✓
S81.029S Laceration with foreign body, unspecified knee, sequela ✓
S81.029S Laceration with foreign body, unspecified knee, sequela ✓
S81.031 Puncture wound without foreign body, right knee —
S81.031 Puncture wound without foreign body, right knee —
S81.031A Puncture wound without foreign body, right knee, initial encounter ✓
S81.031A Puncture wound without foreign body, right knee, initial encounter ✓
S81.031D Puncture wound without foreign body, right knee, subsequent encounter ✓
S81.031D Puncture wound without foreign body, right knee, subsequent encounter ✓
S81.031S Puncture wound without foreign body, right knee, sequela ✓
S81.031S Puncture wound without foreign body, right knee, sequela ✓
S81.032 Puncture wound without foreign body, left knee —
S81.032 Puncture wound without foreign body, left knee —
S81.032A Puncture wound without foreign body, left knee, initial encounter ✓
S81.032A Puncture wound without foreign body, left knee, initial encounter ✓
S81.032D Puncture wound without foreign body, left knee, subsequent encounter ✓
S81.032D Puncture wound without foreign body, left knee, subsequent encounter ✓
S81.032S Puncture wound without foreign body, left knee, sequela ✓
S81.032S Puncture wound without foreign body, left knee, sequela ✓
S81.039 Puncture wound without foreign body, unspecified knee —
S81.039 Puncture wound without foreign body, unspecified knee —
S81.039A Puncture wound without foreign body, unspecified knee, initial encounter ✓
S81.039A Puncture wound without foreign body, unspecified knee, initial encounter ✓
S81.039D Puncture wound without foreign body, unspecified knee, subsequent encounter ✓
S81.039D Puncture wound without foreign body, unspecified knee, subsequent encounter ✓
S81.039S Puncture wound without foreign body, unspecified knee, sequela ✓
S81.039S Puncture wound without foreign body, unspecified knee, sequela ✓
S81.041 Puncture wound with foreign body, right knee —
S81.041 Puncture wound with foreign body, right knee —
S81.041A Puncture wound with foreign body, right knee, initial encounter ✓
S81.041A Puncture wound with foreign body, right knee, initial encounter ✓
S81.041D Puncture wound with foreign body, right knee, subsequent encounter ✓
S81.041D Puncture wound with foreign body, right knee, subsequent encounter ✓
S81.041S Puncture wound with foreign body, right knee, sequela ✓
S81.041S Puncture wound with foreign body, right knee, sequela ✓
S81.042 Puncture wound with foreign body, left knee —
S81.042 Puncture wound with foreign body, left knee —
S81.042A Puncture wound with foreign body, left knee, initial encounter ✓
S81.042A Puncture wound with foreign body, left knee, initial encounter ✓
S81.042D Puncture wound with foreign body, left knee, subsequent encounter ✓
S81.042D Puncture wound with foreign body, left knee, subsequent encounter ✓
S81.042S Puncture wound with foreign body, left knee, sequela ✓
S81.042S Puncture wound with foreign body, left knee, sequela ✓
S81.049 Puncture wound with foreign body, unspecified knee —
S81.049 Puncture wound with foreign body, unspecified knee —
S81.049A Puncture wound with foreign body, unspecified knee, initial encounter ✓
S81.049A Puncture wound with foreign body, unspecified knee, initial encounter ✓
S81.049D Puncture wound with foreign body, unspecified knee, subsequent encounter ✓
S81.049D Puncture wound with foreign body, unspecified knee, subsequent encounter ✓
S81.049S Puncture wound with foreign body, unspecified knee, sequela ✓
S81.049S Puncture wound with foreign body, unspecified knee, sequela ✓
S81.051 Open bite, right knee —
S81.051 Open bite, right knee —
S81.051A Open bite, right knee, initial encounter ✓
S81.051A Open bite, right knee, initial encounter ✓
S81.051D Open bite, right knee, subsequent encounter ✓
S81.051D Open bite, right knee, subsequent encounter ✓
S81.051S Open bite, right knee, sequela ✓
S81.051S Open bite, right knee, sequela ✓
S81.052 Open bite, left knee —
S81.052 Open bite, left knee —
S81.052A Open bite, left knee, initial encounter ✓
S81.052A Open bite, left knee, initial encounter ✓
S81.052D Open bite, left knee, subsequent encounter ✓
S81.052D Open bite, left knee, subsequent encounter ✓
S81.052S Open bite, left knee, sequela ✓
S81.052S Open bite, left knee, sequela ✓
S81.059 Open bite, unspecified knee —
S81.059 Open bite, unspecified knee —
S81.059A Open bite, unspecified knee, initial encounter ✓
S81.059A Open bite, unspecified knee, initial encounter ✓
S81.059D Open bite, unspecified knee, subsequent encounter ✓
S81.059D Open bite, unspecified knee, subsequent encounter ✓
S81.059S Open bite, unspecified knee, sequela ✓
S81.059S Open bite, unspecified knee, sequela ✓
S81.80 Unspecified open wound of lower leg —
S81.80 Unspecified open wound of lower leg —
S81.81 Laceration without foreign body of lower leg —
S81.81 Laceration without foreign body of lower leg —
S81.82 Laceration with foreign body of lower leg —
S81.82 Laceration with foreign body of lower leg —
S81.83 Puncture wound without foreign body of lower leg —
S81.83 Puncture wound without foreign body of lower leg —
S81.84 Puncture wound with foreign body of lower leg —
S81.84 Puncture wound with foreign body of lower leg —
S81.85 Open bite of lower leg —
S81.85 Open bite of lower leg —
S81.801 Unspecified open wound, right lower leg —
S81.801 Unspecified open wound, right lower leg —
S81.801A Unspecified open wound, right lower leg, initial encounter ✓
S81.801A Unspecified open wound, right lower leg, initial encounter ✓
S81.801D Unspecified open wound, right lower leg, subsequent encounter ✓
S81.801D Unspecified open wound, right lower leg, subsequent encounter ✓
S81.801S Unspecified open wound, right lower leg, sequela ✓
S81.801S Unspecified open wound, right lower leg, sequela ✓
S81.802 Unspecified open wound, left lower leg —
S81.802 Unspecified open wound, left lower leg —
S81.802A Unspecified open wound, left lower leg, initial encounter ✓
S81.802A Unspecified open wound, left lower leg, initial encounter ✓
S81.802D Unspecified open wound, left lower leg, subsequent encounter ✓
S81.802D Unspecified open wound, left lower leg, subsequent encounter ✓
S81.802S Unspecified open wound, left lower leg, sequela ✓
S81.802S Unspecified open wound, left lower leg, sequela ✓
S81.809 Unspecified open wound, unspecified lower leg —
S81.809 Unspecified open wound, unspecified lower leg —
S81.809A Unspecified open wound, unspecified lower leg, initial encounter ✓
S81.809A Unspecified open wound, unspecified lower leg, initial encounter ✓
S81.809D Unspecified open wound, unspecified lower leg, subsequent encounter ✓
S81.809D Unspecified open wound, unspecified lower leg, subsequent encounter ✓
S81.809S Unspecified open wound, unspecified lower leg, sequela ✓
S81.809S Unspecified open wound, unspecified lower leg, sequela ✓
S81.811 Laceration without foreign body, right lower leg —
S81.811 Laceration without foreign body, right lower leg —
S81.811A Laceration without foreign body, right lower leg, initial encounter ✓
S81.811A Laceration without foreign body, right lower leg, initial encounter ✓
S81.811D Laceration without foreign body, right lower leg, subsequent encounter ✓
S81.811D Laceration without foreign body, right lower leg, subsequent encounter ✓
S81.811S Laceration without foreign body, right lower leg, sequela ✓
S81.811S Laceration without foreign body, right lower leg, sequela ✓
S81.812 Laceration without foreign body, left lower leg —
S81.812 Laceration without foreign body, left lower leg —
S81.812A Laceration without foreign body, left lower leg, initial encounter ✓
S81.812A Laceration without foreign body, left lower leg, initial encounter ✓
S81.812D Laceration without foreign body, left lower leg, subsequent encounter ✓
S81.812D Laceration without foreign body, left lower leg, subsequent encounter ✓
S81.812S Laceration without foreign body, left lower leg, sequela ✓
S81.812S Laceration without foreign body, left lower leg, sequela ✓
S81.819 Laceration without foreign body, unspecified lower leg —
S81.819 Laceration without foreign body, unspecified lower leg —
S81.819A Laceration without foreign body, unspecified lower leg, initial encounter ✓
S81.819A Laceration without foreign body, unspecified lower leg, initial encounter ✓
S81.819D Laceration without foreign body, unspecified lower leg, subsequent encounter ✓
S81.819D Laceration without foreign body, unspecified lower leg, subsequent encounter ✓
S81.819S Laceration without foreign body, unspecified lower leg, sequela ✓
S81.819S Laceration without foreign body, unspecified lower leg, sequela ✓
S81.821 Laceration with foreign body, right lower leg —
S81.821 Laceration with foreign body, right lower leg —
S81.821A Laceration with foreign body, right lower leg, initial encounter ✓
S81.821A Laceration with foreign body, right lower leg, initial encounter ✓
S81.821D Laceration with foreign body, right lower leg, subsequent encounter ✓
S81.821D Laceration with foreign body, right lower leg, subsequent encounter ✓
S81.821S Laceration with foreign body, right lower leg, sequela ✓
S81.821S Laceration with foreign body, right lower leg, sequela ✓
S81.822 Laceration with foreign body, left lower leg —
S81.822 Laceration with foreign body, left lower leg —
S81.822A Laceration with foreign body, left lower leg, initial encounter ✓
S81.822A Laceration with foreign body, left lower leg, initial encounter ✓
S81.822D Laceration with foreign body, left lower leg, subsequent encounter ✓
S81.822D Laceration with foreign body, left lower leg, subsequent encounter ✓
S81.822S Laceration with foreign body, left lower leg, sequela ✓
S81.822S Laceration with foreign body, left lower leg, sequela ✓
S81.829 Laceration with foreign body, unspecified lower leg —
S81.829 Laceration with foreign body, unspecified lower leg —
S81.829A Laceration with foreign body, unspecified lower leg, initial encounter ✓
S81.829A Laceration with foreign body, unspecified lower leg, initial encounter ✓
S81.829D Laceration with foreign body, unspecified lower leg, subsequent encounter ✓
S81.829D Laceration with foreign body, unspecified lower leg, subsequent encounter ✓
S81.829S Laceration with foreign body, unspecified lower leg, sequela ✓
S81.829S Laceration with foreign body, unspecified lower leg, sequela ✓
S81.831 Puncture wound without foreign body, right lower leg —
S81.831 Puncture wound without foreign body, right lower leg —
S81.831A Puncture wound without foreign body, right lower leg, initial encounter ✓
S81.831A Puncture wound without foreign body, right lower leg, initial encounter ✓
S81.831D Puncture wound without foreign body, right lower leg, subsequent encounter ✓
S81.831D Puncture wound without foreign body, right lower leg, subsequent encounter ✓
S81.831S Puncture wound without foreign body, right lower leg, sequela ✓
S81.831S Puncture wound without foreign body, right lower leg, sequela ✓
S81.832 Puncture wound without foreign body, left lower leg —
S81.832 Puncture wound without foreign body, left lower leg —
S81.832A Puncture wound without foreign body, left lower leg, initial encounter ✓
S81.832A Puncture wound without foreign body, left lower leg, initial encounter ✓
S81.832D Puncture wound without foreign body, left lower leg, subsequent encounter ✓
S81.832D Puncture wound without foreign body, left lower leg, subsequent encounter ✓
S81.832S Puncture wound without foreign body, left lower leg, sequela ✓
S81.832S Puncture wound without foreign body, left lower leg, sequela ✓
S81.839 Puncture wound without foreign body, unspecified lower leg —
S81.839 Puncture wound without foreign body, unspecified lower leg —
S81.839A Puncture wound without foreign body, unspecified lower leg, initial encounter ✓
S81.839A Puncture wound without foreign body, unspecified lower leg, initial encounter ✓
S81.839D Puncture wound without foreign body, unspecified lower leg, subsequent encounter ✓
S81.839D Puncture wound without foreign body, unspecified lower leg, subsequent encounter ✓
S81.839S Puncture wound without foreign body, unspecified lower leg, sequela ✓
S81.839S Puncture wound without foreign body, unspecified lower leg, sequela ✓
S81.841 Puncture wound with foreign body, right lower leg —
S81.841 Puncture wound with foreign body, right lower leg —
S81.841A Puncture wound with foreign body, right lower leg, initial encounter ✓
S81.841A Puncture wound with foreign body, right lower leg, initial encounter ✓
S81.841D Puncture wound with foreign body, right lower leg, subsequent encounter ✓
S81.841D Puncture wound with foreign body, right lower leg, subsequent encounter ✓
S81.841S Puncture wound with foreign body, right lower leg, sequela ✓
S81.841S Puncture wound with foreign body, right lower leg, sequela ✓
S81.842 Puncture wound with foreign body, left lower leg —
S81.842 Puncture wound with foreign body, left lower leg —
S81.842A Puncture wound with foreign body, left lower leg, initial encounter ✓
S81.842A Puncture wound with foreign body, left lower leg, initial encounter ✓
S81.842D Puncture wound with foreign body, left lower leg, subsequent encounter ✓
S81.842D Puncture wound with foreign body, left lower leg, subsequent encounter ✓
S81.842S Puncture wound with foreign body, left lower leg, sequela ✓
S81.842S Puncture wound with foreign body, left lower leg, sequela ✓
S81.849 Puncture wound with foreign body, unspecified lower leg —
S81.849 Puncture wound with foreign body, unspecified lower leg —
S81.849A Puncture wound with foreign body, unspecified lower leg, initial encounter ✓
S81.849A Puncture wound with foreign body, unspecified lower leg, initial encounter ✓
S81.849D Puncture wound with foreign body, unspecified lower leg, subsequent encounter ✓
S81.849D Puncture wound with foreign body, unspecified lower leg, subsequent encounter ✓
S81.849S Puncture wound with foreign body, unspecified lower leg, sequela ✓
S81.849S Puncture wound with foreign body, unspecified lower leg, sequela ✓
S81.851 Open bite, right lower leg —
S81.851 Open bite, right lower leg —
S81.851A Open bite, right lower leg, initial encounter ✓
S81.851A Open bite, right lower leg, initial encounter ✓
S81.851D Open bite, right lower leg, subsequent encounter ✓
S81.851D Open bite, right lower leg, subsequent encounter ✓
S81.851S Open bite, right lower leg, sequela ✓
S81.851S Open bite, right lower leg, sequela ✓
S81.852 Open bite, left lower leg —
S81.852 Open bite, left lower leg —
S81.852A Open bite, left lower leg, initial encounter ✓
S81.852A Open bite, left lower leg, initial encounter ✓
S81.852D Open bite, left lower leg, subsequent encounter ✓
S81.852D Open bite, left lower leg, subsequent encounter ✓
S81.852S Open bite, left lower leg, sequela ✓
S81.852S Open bite, left lower leg, sequela ✓
S81.859 Open bite, unspecified lower leg —
S81.859 Open bite, unspecified lower leg —
S81.859A Open bite, unspecified lower leg, initial encounter ✓
S81.859A Open bite, unspecified lower leg, initial encounter ✓
S81.859D Open bite, unspecified lower leg, subsequent encounter ✓
S81.859D Open bite, unspecified lower leg, subsequent encounter ✓
S81.859S Open bite, unspecified lower leg, sequela ✓
S81.859S Open bite, unspecified lower leg, sequela ✓

Frequently asked questions

What is ICD-10-CM code S81?

S81 is an ICD-10-CM category covering Open wound of knee and lower leg. It contains 316 more specific diagnosis codes, 216 of which are billable.

Is S81 a billable code?

No — S81 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example S81.0 — Open wound of knee). 216 of the 316 codes under S81 are billable.

What codes fall under S81?

S81 includes S81.0, S81.0, S81.00, S81.00, S81.001, plus 311 more. See the full list with descriptions and billable status above.

More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees

Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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