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Z90 ICD-10-CA category: Acquired absence of organs, not elsewhere classified

Z90 isn’t a code on its own. Choose one of the 13 codes beneath it, the one the documentation supports.

Official description

Z90

Acquired absence of organs, not elsewhere classified

ICD-10-CA · Canada

Codes in Z90

Z90 isn’t a code on its own. Open the group that matches what the note documents.

Z90.0Acquired absence of part of head and neckZ90.1Acquired absence of breast(s) (3 codes)Z90.2Acquired absence of lung [part of] (3 codes)Z90.3Acquired absence of part of stomachZ90.4Acquired absence of other parts of digestive tractZ90.5Acquired absence of kidneyZ90.6Acquired absence of other organs of urinary tractZ90.7Acquired absence of genital organ(s)Z90.8Acquired absence of other organs

Notes for Z90

As CIHI prints them, with any note Z90 takes from the headings above it.

Includes

  • Postoperative or post-traumatic loss of body part NEC

Excludes

Conditions classified elsewhere.

Note

  • This chapter should not be used for international comparison or for primary mortality coding.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 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. Such factors may be elicited during population surveys, when the person may or may not be currently sick, or be recorded as an additional factor to be borne in mind when the person is receiving care for some illness or injury.From Chapter 21: Factors influencing health status and contact with health services (Z00-Z99)

Where Z90 sits

  1. 1ChapterChapter 21: Factors influencing health status and contact with health services (Z00-Z99)
  2. 2Block Z80-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
  3. 3Category Z90Acquired absence of organs, not elsewhere classified

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See Z90 in the CIHI source

Frequently asked questions

Is Z90 a valid ICD-10-CA code?

No. Z90 (Acquired absence of organs, not elsewhere classified) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 13 codes; record the one the documentation supports.

Where is Z90 in ICD-10-CA?

Z90 sits under Z80-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status, within Chapter 21: Factors influencing health status and contact with health services (Z00-Z99).

What coding notes apply to Z90?

ICD-10-CA lists Includes, Excludes, Note notes for Z90, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside Z90

Z80Family history of malignant neoplasmZ81Family history of mental and behavioural disordersZ82Family history of certain disabilities and chronic diseases leading to disablementZ83Family history of other specific disordersZ84Family history of other conditionsZ85Personal history of malignant neoplasmZ86Personal history of certain other diseasesZ87Personal history of other diseases and conditionsZ88Personal history of allergy to drugs, medicaments and biological substancesZ89Acquired absence of limbZ91Personal history of risk-factors, not elsewhere classifiedZ92Personal history of medical treatmentZ93Artificial opening statusZ94Transplanted organ and tissue statusZ95Presence of cardiac and vascular implants and graftsZ96Presence of other functional implantsZ97Presence of other devicesZ98Other postsurgical statesZ99Dependence on enabling machines and devices, not elsewhere classified