2027 ICD-10-CM Diagnosis Code Z90Acquired absence of organs, not elsewhere classified

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z90

ICD-10-CM Z90
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z90 is a non-billable ICD-10-CM category code for acquired absence of organs, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z90.01, Z90.02, Z90.09, and Z90.10.

Code Identity

ICD-10-CM Code
Z90
Billable Status
No — Non-Billable Category
Code Describes
Acquired absence of organs, not elsewhere classified
Short Description
Acquired absence of organs, not elsewhere classified
Same as the full description in the CMS dataset.
Chapter
Z77-Z99
Persons with potential health hazards related to family and personal history and certain conditions influencing health status

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategoryZ90Acquired absence of organs, not elsewhere classified
This CodeZ90Acquired absence of organs, not elsewhere classified

Specific Coding for Acquired absence of organs, not elsewhere classifiedOverview

Non-specific codes like Z90 require more characters. Use one of these billable codes instead:

  • Z90.0 for Acquired absence of part of head and neck

  • Use Z90.01 for Acquired absence of eye

  • Use Z90.02 for Acquired absence of larynx

  • Use Z90.09 for Acquired absence of other part of head and neck

  • Z90.1 for Acquired absence of breast and nipple

  • Use Z90.10 for Acquired absence of unspecified breast and nipple

  • Use Z90.11 for Acquired absence of right breast and nipple

  • Use Z90.12 for Acquired absence of left breast and nipple

  • Use Z90.13 for Acquired absence of bilateral breasts and nipples

  • Use Z90.2 for Acquired absence of lung [part of]

  • Use Z90.3 for Acquired absence of stomach [part of]

  • Z90.4 for Acquired absence of other specified parts of digestive tract

  • Z90.41 for Acquired absence of pancreas

  • Use Z90.49 for Acquired absence of other specified parts of digestive tract

  • Use Z90.5 for Acquired absence of kidney

  • Use Z90.6 for Acquired absence of other parts of urinary tract

  • Z90.7 for Acquired absence of genital organ(s)

  • Z90.71 for Acquired absence of cervix and uterus

  • Z90.72 for Acquired absence of ovaries

  • Use Z90.79 for Acquired absence of other genital organ(s)

  • Z90.8 for Acquired absence of other organs

  • Use Z90.81 for Acquired absence of spleen

  • Use Z90.89 for Acquired absence of other organs

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z90: its own notes plus those printed at block Z77-Z99 and Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • postprocedural or post-traumatic loss of body part NEC

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • congenital absence - see Alphabetical Index

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

  • postprocedural absence of endocrine glands (E89.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status applies to 567 codes
  • any follow-up examination (Z08-Z09)

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z90, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming Z90: its condition is not part of those codes, and both may be reported when the patient has both.

  • M95 Other acquired deformities of musculoskeletal system and connective tissue
    acquired absence of limbs and organs (Z89-Z90) names Z89-Z90, which includes this code

Use Additional Code 1

These codes say to use an additional code from the note, and Z90 is one of the codes named.

  • Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm
    code to identify any acquired absence of organs (Z90.-)

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z90Overview

What is the ICD-10 code for acquired absence of organs, not elsewhere classified?

Z90 is the ICD-10-CM category for acquired absence of organs, not elsewhere classified, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is Z90 (Acquired absence of organs, not elsewhere classified) a billable code?

No. This is a category header that groups the codes for acquired absence of organs, not elsewhere classified, and headers cannot be submitted on claims. Claims for acquired absence of organs, not elsewhere classified need a more specific code from this category, such as Z90.01, Z90.02, and Z90.09.