ICD-10 code for forehead blister

The ICD-10-CM code for forehead blister is S00.82 (Blister (nonthermal) of other part of head).

Within S00.8, choose S00.82 (Blister (nonthermal) of other part of head) only when documentation doesn't support a more specific option: unspecified superficial injury of other part of head (S00.80), abrasion of other part of head (S00.81), contusion of other part of head (S00.83), external constriction of other part of head (S00.84), superficial foreign body of other part of head (S00.85), insect bite (nonvenomous) of other part of head (S00.86) and other superficial bite of other part of head (S00.87).

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.