Z90.0 — Acquired absence of part of head and neck

Not billable

Is Z90.0 billable?

No — Z90.0 is a non-billable header code. Z90.0 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath Z90.0.

Billable codes under this header

Z90.0 at a glance

Code	Z90.0
Description	Acquired absence of part of head and neck
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes1 — never code together — inherited from Z90

The conditions below can never be reported together with Z90.0 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

congenital absence - see Alphabetical Index

Excludes2 — not included here — inherited from Z90

The conditions below are not part of Z90.0, but a patient may have both at the same time. When documentation supports it, Z90.0 and the excluded code may both be reported.

postprocedural absence of endocrine glands (E89.-)

Code also — inherited from Z77-Z99

Two codes may be needed to describe the condition fully. Whether Z90.0 is sequenced first depends on the reason for the encounter.

any follow-up examination (Z08-Z09)

What codes fall under Z90.0? (3)

How long has Z90.0 existed?

Z90.0 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.