ICD-10-CM 2027
ICD-10 code for anus bite
From the official ICD-10-CM alphabetic index entry “Bite (s) (animal) (human) › anus”. Page updated September 29, 2026.
About coding anus bite
The ICD-10-CM code for anus bite is S31.835 (Open bite of anus). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on S31.835.
Within S31.83 (open wound of anus), S31.835 is specifically for open bite of anus. Related codes cover laceration without foreign body of anus (S31.831), laceration with foreign body of anus (S31.832), puncture wound without foreign body of anus (S31.833), puncture wound with foreign body of anus (S31.834) and unspecified open wound of anus (S31.839).
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 S31.835 together with the conditions in its Excludes1 note: superficial bite of anus (S30.877).
More specific anus bite codes (official index)
Don't confuse with (Excludes1 for S31.835)
- superficial bite of anus (S30.877)
Common questions about anus bite ICD-10 codes
What is the ICD-10 code for anus bite?
- S31.835 — Open bite of anus (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: S30.877, S30.867.
What is the ICD-10 code for superficial nec anus bite?
- S30.877 — Other superficial bite of anus (header code; choose a more specific subcode).
Is S31.835 billable?
- No. S31.835 is a header code. Report one of its more specific subcodes instead.