Z42Encounter for plastic and reconstructive surgery following medical procedure or healed injury

Z42 is the ICD-10-CM diagnosis code for encounter for plastic and reconstructive surgery following medical procedure or healed injury. It belongs to block Z40-Z53 (Encounters for other specific health care) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Z42.1 (mastectomy) and Z42.8 (injury).

Don't report Z42 together with the conditions in its Excludes1 note: encounter for cosmetic plastic surgery (Z41.1) and encounter for plastic surgery for treatment of current injury - code to relevent injury.

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