2027 ICD-10-CM Diagnosis Code Z89.621Acquired absence of right hip joint

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z89

ICD-10-CM Z89.621
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z89.621 is a billable ICD-10-CM diagnosis code for acquired absence of right hip joint. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as history of disarticulation of bilateral hips. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acquired absence of limb or organ.

Code Identity

ICD-10-CM Code
Z89.621
Billable Status
Yes — Valid for Submission
Code Describes
Acquired absence of right hip joint
Short Description
Acquired absence of right hip joint
Same as the full description in the CMS dataset.
Parent Code
Z89.62
Acquired absence of hip

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
CategoryZ89Acquired absence of limb
This CodeZ89.621Acquired absence of right hip joint

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z89.621.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z89.621 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • History of disarticulation of bilateral hips
  • History of disarticulation of hip
  • History of left hip disarticulation
  • History of right hip disarticulation

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z89.621: its own notes plus those printed at Z89, 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.

From Z89 Acquired absence of limb applies to 49 codes
  • amputation status
  • postprocedural loss of limb
  • post-traumatic loss of limb

Excludes1

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

From Z89 Acquired absence of limb applies to 49 codes
  • acquired deformities of limbs (M20-M21)
  • congenital absence of limbs (Q71-Q73)

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 Z89.621, its category, or a range that includes it.

Excludes1 4

These codes carry an Excludes1 note naming Z89.621: they are not reported together with it, unless the two conditions are unrelated.

  • M20 Acquired deformities of fingers and toes
    acquired absence of fingers and toes (Z89.-) names Z89.-, which includes this code
  • M21 Other acquired deformities of limbs
    acquired absence of limb (Z89.-) names Z89.-, which includes this code
  • Z47.32 Aftercare following explantation of hip joint prosthesis
    acquired absence of hip joint following prior explantation of hip joint prosthesis (Z89.62-) names Z89.62-, which includes this code
  • Z47.32 Aftercare following explantation of hip joint prosthesis
    hip joint prosthesis explantation status (Z89.62-) names Z89.62-, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming Z89.621: 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 Z89.621 is one of the codes named.

  • Z47.81 Encounter for orthopedic aftercare following surgical amputation
    code to identify the limb amputated (Z89.-) names Z89.-, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC022
Acquired absence of limb or organ
Default principal diagnosis: inpatient No · outpatient Yes

Clinical InformationClinical

  • Acquired Absence of Limb

    the absence of an extremity which is not present at birth and is the result of an injury or disease.

Patient EducationClinical

Hip Injuries and Disorders

Your hip is the joint where your femur (thigh bone) meets your pelvis (hip bone). There are two main parts: a ball at the end of the femur, which fits in a socket in the pelvis. Your hip is known as a ball-and-socket joint. This is because you have a ball at the end of your femur, and it fits into a socket in your pelvis.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z89.621 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V49.77 Status amput hip
Approximate The match is approximate rather than exact.
ICD-9-CM
V88.21 Acq absence of hip joint
Approximate The match is approximate rather than exact.

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 Z89.621Overview

What is the ICD-10 code for acquired absence of right hip joint?

The ICD-10-CM code for acquired absence of right hip joint is Z89.621 (sometimes written as Z89621). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z89.621 (Acquired absence of hip) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report acquired absence of right hip joint on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z89.621 group to?

On inpatient claims, acquired absence of right hip joint maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.

Can Z89.621 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because acquired absence of right hip joint describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z89.621 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for acquired absence of right hip joint on inpatient claims. The code appears in the Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) range of the CMS exempt list.