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ICD-10-CM 2027

ICD-10 code for mastectomy status

Z90.1

Acquired absence of breast and nipple

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Status (post) › mastectomy (unilateral) (bilateral)”. Page updated September 29, 2026.

About coding mastectomy status

The ICD-10-CM code for mastectomy status is Z90.1 (Acquired absence of breast and nipple).

Within Z90 (acquired absence of organs, not elsewhere classified), Z90.1 is specifically for acquired absence of breast and nipple. Related codes cover part of head and neck (Z90.0), lung [part of] (Z90.2), stomach [part of] (Z90.3), other specified parts of digestive tract (Z90.4), kidney (Z90.5), other parts of urinary tract (Z90.6), genital organ(s) (Z90.7) and other organs (Z90.8).

To report this condition, pick the subcode that matches the documentation: Z90.10 (nipple), Z90.11 (nipple), Z90.12 (nipple) and Z90.13 (nipples).

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

Common questions about mastectomy status ICD-10 codes

What is the ICD-10 code for mastectomy status?

Z90.1 — Acquired absence of breast and nipple (a header code; report a more specific subcode).

Is Z90.1 billable?

No. Z90.1 is a header code. Report one of its more specific subcodes instead.