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ICD-10-CM 2027

ICD-10 code for ankle blister

S90.52

Blister (nonthermal) of ankle

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Blister (nonthermal) › ankle”. Page updated September 29, 2026.

About coding ankle blister

The ICD-10-CM code for ankle blister is S90.52 (Blister (nonthermal) of ankle).

Within S90.5 (other superficial injuries of ankle), S90.52 is specifically for Blister (nonthermal) of ankle. Related codes cover abrasion of ankle (S90.51), external constriction of ankle (S90.54), superficial foreign body of ankle (S90.55), insect bite (nonvenomous) of ankle (S90.56) and other superficial bite of ankle (S90.57).

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.

Common questions about ankle blister ICD-10 codes

What is the ICD-10 code for ankle blister?

S90.52 — Blister (nonthermal) of ankle (a header code; report a more specific subcode).

Is S90.52 billable?

No. S90.52 is a header code. Report one of its more specific subcodes instead.