Z89.619
Acquired absence of unspecified leg above knee
HCC risk adjustment mapping
CMS-HCC V28
Amputation Status, Lower Limb/Amputation Complications
CMS-HCC ESRD V24
Amputation Status, Lower Limb/Amputation Complications
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
Acquired absence of leg NOS Disarticulation at knee
any follow-up examination (Z08-Z09)
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.
Official Guidelines for Z89.619
FY 2026 ›Sections that reference Z89.619
- I.C.21.c.3)Status
… and biological substances Except: Z88.9, Allergy status to unspecified drugs, medicaments and biological substances status Z89 Acquired absence of limb Z90 Acquired absence of organs, not elsewhere classified Z91.0- Allergy status, other than to drugs …
- I.B.3Code or codes from A00.0 through T88.9, Z00-Z99.8, U00-U85Conventions & general rules
The appropriate code or codes from A00.0 through T88.9, Z00-Z99.8, and U00-U85 must be used to identify diagnoses, symptoms, conditions, problems, complaints or other reason(s) for the …
- I.C.20.a.1)Used with any code in the range of A00.0-T88.9, Z00-Z99Chapter 20
An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. …
- IV.BCodes from A00.0 through T88.9, Z00-Z99, U00-U85Outpatient services
The appropriate code(s) from A00.0 through T88.9, Z00-Z99 and U00-U85 must be used to identify diagnoses, symptoms, conditions, problems, complaints, or other reason(s) for the …
- IV.EEncounters for circumstances other than a disease or injuryOutpatient services
… The Factors Influencing Health Status and Contact with Health Services codes (Z00- Z99) are provided to deal with occasions when circumstances other than a disease or injury are recorded as diagnosis or problems. …
Sections whose FY 2026 text names Z89.619, its Z89 category, or a range containing it — the chapter guidance above is the authoritative source.