ICD-10-CM 2027
ICD-10 code for head blister
From the official ICD-10-CM alphabetic index entry “Blister (nonthermal) › head”. Page updated September 29, 2026.
About coding head blister
The ICD-10-CM code for head blister is S00.92 (Blister (nonthermal) of unspecified part of head). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on S00.92.
Within S00.9, choose S00.92 (Blister (nonthermal) of unspecified part of head) only when documentation doesn't support a more specific option: unspecified superficial injury of unspecified part of head (S00.90), abrasion of unspecified part of head (S00.91), contusion of unspecified part of head (S00.93), external constriction of unspecified part of head (S00.94), superficial foreign body of unspecified part of head (S00.95), insect bite (nonvenomous) of unspecified part of head (S00.96) and other superficial bite of unspecified part of head (S00.97).
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.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific head blister codes (official index)
Common questions about head blister ICD-10 codes
What is the ICD-10 code for head blister?
- S00.92 — Blister (nonthermal) of unspecified part of head (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: S00.521, S00.32, S00.522, S00.02 and others below.
What is the ICD-10 code for lip head blister?
- S00.521 — Blister (nonthermal) of lip (header code; choose a more specific subcode).
What is the ICD-10 code for nose head blister?
- S00.32 — Blister (nonthermal) of nose (header code; choose a more specific subcode).
What is the ICD-10 code for oral cavity head blister?
- S00.522 — Blister (nonthermal) of oral cavity (header code; choose a more specific subcode).
What is the ICD-10 code for scalp head blister?
- S00.02 — Blister (nonthermal) of scalp (header code; choose a more specific subcode).
Is S00.92 billable?
- No. S00.92 is a header code. Report one of its more specific subcodes instead.