2026 ICD-10-CM Diagnosis Code Q65.9Congenital deformity of hip, unspecified

ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q65

ICD-10-CM Q65.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q65.9 is a billable ICD-10-CM diagnosis code for congenital deformity of hip, unspecified. 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. Coders also document this condition as bilateral congenital deformity of hip joints. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Musculoskeletal congenital conditions.

Code Identity

ICD-10-CM Code
Q65.9
Billable Status
Yes — Valid for Submission
Code Describes
Congenital deformity of hip, unspecified
Short Description
Congenital deformity of hip, unspecified
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 CodeQ65.9Congenital deformity of hip, unspecified

Present on Admission (POA)Billing

Q65.9 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 deformity of hip joints
  • Congenital deformity of hip joint
  • Congenital deformity of left hip joint
  • Congenital deformity of right hip joint
  • Molded baby syndrome
  • Pelvic obliquity
  • Plagiocephaly

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.

    • Deformity
      • hip (joint) (acquired)
        • 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

Clinical InformationClinical

  • Craniosynostoses

    premature closure of one or more cranial sutures. it often results in plagiocephaly. craniosynostoses that involve multiple sutures are sometimes associated with congenital syndromes such as acrocephalosyndactylia; and craniofacial dysostosis.

  • Plagiocephaly

    the condition characterized by uneven or irregular shape of the head often in parallelogram shape with a flat spot on the back or one side of the head. it can either result from the premature cranial suture closure (craniosynostosis) or from external forces (nonsynostotic plagiocephaly).

  • Plagiocephaly, Nonsynostotic

    a deformity of the skull that is not due to bone fusion (synostosis), such as craniosynostoses, and is characterized by an asymmetric skull and face. it is observed with an increased frequency in infants after the adoption of supine sleeping recommendations to prevent sudden infant death syndrome.

  • Congenital Deformity of Hip

    any anatomic abnormality of the hip that is present at the time of birth.

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 Q65.9 to ICD-9-CMHistory

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

ICD-9-CM
755.63 Cong hip deformity NEC
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 Q65.9Overview

Is Q65.9 (Congenital deformities of hip) a billable code?

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

What MS-DRG does Q65.9 group to?

When congenital deformity of hip, unspecified 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 Q65.9 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 deformity of hip, unspecified on inpatient claims.

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

Under the General Equivalence Mappings, congenital deformity of hip, unspecified converts to ICD-9-CM 755.63 (cong hip deformity NEC). 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.