ICD-10-CM 2027
ICD-10 code for knee bite
From the official ICD-10-CM alphabetic index entry “Bite (s) (animal) (human) › knee”. Page updated September 29, 2026.
About coding knee bite
The ICD-10-CM code for knee bite is S81.05 (Open bite of knee). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on S81.05.
Within S81.0 (open wound of knee), S81.05 is specifically for open bite of knee. Related codes cover unspecified open wound of knee (S81.00), laceration without foreign body of knee (S81.01), laceration with foreign body of knee (S81.02), puncture wound without foreign body of knee (S81.03) and puncture wound with foreign body of knee (S81.04).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
Don't report S81.05 together with the conditions in its Excludes1 note: superficial bite of knee (S80.27-).
More specific knee bite codes (official index)
Don't confuse with (Excludes1 for S81.05)
- superficial bite of knee (S80.27-)
Common questions about knee bite ICD-10 codes
What is the ICD-10 code for knee bite?
- S81.05 — Open bite of knee (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: S80.27, S80.26.
What is the ICD-10 code for superficial nec knee bite?
- S80.27 — Other superficial bite of knee (header code; choose a more specific subcode).
Is S81.05 billable?
- No. S81.05 is a header code. Report one of its more specific subcodes instead.