Alphabetic Index FY2027

Z90

Acquired absence of organs, not elsewhere classified

FY2027Chapter 21: Factors influencing health status and contact with health services/Z77–Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

Z90 is a non-billable ICD-10-CM code category for acquired absence of organs, not elsewhere classified. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Z90.0 Acquired absence of part of head and neck, Z90.1 Acquired absence of breast and nipple, Z90.2 Acquired absence of lung [part of], Z90.3 Acquired absence of stomach [part of] and 5 more. Its coding notes include a Code also instruction, 1 Excludes1 entry and 1 Excludes2 entry.

Code also

Two codes may be needed to describe the condition. This note gives no sequencing order.

Also from chapter/block level (1 note)
Inherited from Z77–Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status
  • any follow-up examination (Z08-Z09)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • congenital absence - see Alphabetical Index

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

This code
  • postprocedural absence of endocrine glands (E89.-)

Includes

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

This code
  • postprocedural or post-traumatic loss of body part NEC

Notes

Also from chapter/block level (3 notes)
Inherited from Chapter 21 Factors influencing health status and contact with health services
  • 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.

More specific codes under Z90 9