Z90Acquired absence of organs, not elsewhere classified

Z90 is the ICD-10-CM diagnosis code for acquired absence of organs, not elsewhere classified. It belongs to block Z77-Z99 (persons with potential health hazards related to family and personal history and certain conditions influencing health status) 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 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Z90.0 (neck), Z90.1 (nipple), Z90.2 (of]), Z90.3 (of]), Z90.4 (tract), Z90.5 (kidney), Z90.6 (tract), Z90.7 (organ(s)) and 1 more.

Don't report Z90 together with the conditions in its Excludes1 note: congenital absence - see Alphabetical Index.

The conditions in its Excludes2 note aren't part of Z90, but may be coded alongside it if the patient has both: postprocedural absence of endocrine glands (E89.-).

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