ICD-10 code for anus blister

The ICD-10-CM code for anus blister is S30.827 (Blister (nonthermal) of anus).

Within S30.82 (Blister (nonthermal) of abdomen, lower back, pelvis and external genitals), S30.827 is specifically for Blister (nonthermal) of anus. Related codes cover lower back and pelvis (S30.820), abdominal wall (S30.821), penis (S30.822), scrotum and testes (S30.823), vagina and vulva (S30.824), unspecified external genital organs, male (S30.825), unspecified external genital organs, female (S30.826) and flank (S30.82A).

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.