2026 ICD-10-CM Diagnosis Code Q65.6Congenital unstable hip

ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q65

ICD-10-CM Q65.6
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q65.6 is a billable ICD-10-CM diagnosis code for congenital unstable hip. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Musculoskeletal congenital conditions.

Code Identity

ICD-10-CM Code
Q65.6
Billable Status
Yes — Valid for Submission
Code Describes
Congenital unstable hip
Short Description
Congenital unstable hip
Same as the full description in the CMS dataset.
Parent Code
Q65
Congenital deformities of hip

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ65-Q79Congenital malformations and deformations of the musculoskeletal system
CategoryQ65Congenital deformities of hip
This CodeQ65.6Congenital unstable hip

Present on Admission (POA)Billing

Q65.6 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral congenital instability of hip joints
  • Bilateral instability of hip joints
  • Congenital instability of hip joint
  • Congenital instability of left hip joint
  • Congenital instability of right hip joint
  • Dislocatable hip
  • Instability of left hip joint
  • Instability of right hip joint
  • Subluxatable hip

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Congenital dislocatable hip

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dislocatable hip, congenital
    • Predislocation status of hip at birth
    • Preluxation, hip, congenital
    • Subluxatable hip
    • Unstable
      • hip (congenital)

Clinical ClassificationClinical

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

CCSR MAL008
Musculoskeletal congenital conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

The full article covers:

  • What are birth defects?
  • What causes birth defects?
  • Who is at risk of having a baby with birth defects?
  • How are birth defects diagnosed?
  • What are the treatments for birth defects?
  • Can birth defects be prevented?

Read the full article at MedlinePlus

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

Convert Q65.6 to ICD-9-CMHistory

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

ICD-9-CM
754.32 Cong hip sublux, unilat
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q65.6Overview

Is Q65.6 (Congenital deformities of hip) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report congenital unstable hip on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Q65.6 group to?

When congenital unstable hip is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q65.6 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 congenital unstable hip on inpatient claims.

What is the ICD-9 equivalent of Q65.6?

Under the General Equivalence Mappings, congenital unstable hip converts to ICD-9-CM 754.32 (cong hip sublux, unilat). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.