S20.36Insect bite (nonvenomous) of front wall of thorax

S20.36 is the ICD-10-CM diagnosis code for insect bite (nonvenomous) of front wall of thorax. It belongs to category S20 (superficial injury of thorax), block S20-S29 (injuries to the thorax) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within S20.3 (other and unspecified superficial injuries of front wall of thorax), S20.36 is specifically for insect bite (nonvenomous) of front wall of thorax. Related codes cover unspecified superficial injuries of front wall of thorax (S20.30), abrasion of front wall of thorax (S20.31), Blister (nonthermal) of front wall of thorax (S20.32), external constriction of front wall of thorax (S20.34), superficial foreign body of front wall of thorax (S20.35) and other superficial bite of front wall of thorax (S20.37).

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.