T23.641Corrosion of second degree of multiple right fingers (nail), including thumb

T23.641 is the ICD-10-CM diagnosis code for corrosion of second degree of multiple right fingers (nail), including thumb. It belongs to category T23 (burn and corrosion of wrist and hand), block T20-T25 (burns and corrosions of external body surface, specified by site) 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 3 subcodes must be used instead.

Within T23.64 (corrosion of second degree of multiple fingers (nail), including thumb), T23.641 is specifically for corrosion of second degree of multiple right fingers (nail), including thumb. Related codes cover multiple left fingers (nail), including thumb (T23.642) and unspecified multiple fingers (nail), including thumb (T23.649).

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.