T24.7Corrosion of third degree of lower limb, except ankle and foot

T24.7 is the ICD-10-CM diagnosis code for corrosion of third degree of lower limb, except ankle and foot. It belongs to category T24 (burn and corrosion of lower limb, except ankle and foot), 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 5 subcodes must be used instead.

Within T24 (burn and corrosion of lower limb, except ankle and foot), T24.7 is specifically for corrosion of third degree of lower limb, except ankle and foot. Related codes cover burn of unspecified degree of lower limb, except ankle and foot (T24.0), burn of first degree of lower limb, except ankle and foot (T24.1), burn of second degree of lower limb, except ankle and foot (T24.2), burn of third degree of lower limb, except ankle and foot (T24.3), corrosion of unspecified degree of lower limb, except ankle and foot (T24.4), corrosion of first degree of lower limb, except ankle and foot (T24.5) and corrosion of second degree of lower limb, except ankle and foot (T24.6).

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.

Code first: (T51-T65) to identify chemical and intent.

Use an additional code for: external cause code to identify place (Y92).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.