Skip to main content

Q65.5 ICD-10-CM Code: Congenital partial dislocation of hip, unspecified

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
1 Excludes1

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 564 — OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH MCC (MDC 08)
  • MS-DRG 565 — OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH CC (MDC 08)
  • MS-DRG 566 — OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITHOUT CC/MCC (MDC 08)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for Q65.5 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on Q65.5 itself; “inherited from” names the category or block whose note applies here.

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Source: inherited from Q65

Coder workflow for Q65.5

MedCoder structured workflow — derived from this code’s own official record

Before you code Q65.5

  1. Unspecified does not mean incorrect. When the record gives no greater specificity, Q65.5 may be the appropriate code. Check the record for detail that supports a more specific sibling. An unspecified code is for records that do not provide the detail a more specific code needs; a query, not an assumption, is the route to specificity (Guidelines I.A.9.b, I.B.18).

    ReviewQ65.0, Q65.1, Q65.3, Q65.4, Q65.6, Q65.8

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  2. Laterality is coded in this family. Confirm the side documented — right, left, or bilateral — and select the matching code (this page’s code: unspecified). The unspecified-side code applies only when the record states no side. Laterality is assigned from the documented side; where a bilateral code exists and both sides are documented, it is used instead of two unilateral codes (Guidelines I.B.13).

    ReviewQ65.4 · bilateral

    Guide: Laterality coding →

  3. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with Q65.5. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

    See the official tabular notes

Choose the right path

  1. Does the record document the detail a more specific sibling code needs?
    Yes → Review the specific siblings in this subcategory.
    No → Continue — Q65.5 is appropriate when the documentation goes no further.

    ReviewQ65.0, Q65.1, Q65.3, Q65.4, Q65.6, Q65.8

  2. Does the documentation support a condition named in Q65.5’s Excludes1 note?
    Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
    No → Continue.

    ReviewR29.4

  3. Is the side documented?
    Yes → Select the code for the documented side (or the bilateral code when both sides are documented and one exists).
    No → Use the unspecified-side code only when the record states no side; a query is the alternative.

    ReviewQ65.4 · bilateral

Consider Q65.5. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
Laterality
Right, left or bilateral as documented; unspecified only when the record states no side (Guidelines I.B.13).
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes1 — check before selecting Q65.5(1 note)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with Q65.5: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareR29.4

    See the official tabular notes · Guidelines I.A.12.a

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: The provider documents the condition in the terms of this code’s title and records no further detail.

Coding question: Is a more specific sibling code supportable?

Path: Review the specific siblings in this subcategory and what each requires the record to state.

Reason: A more specific code needs documentation of the distinguishing element; without it the unspecified code is appropriate, and a provider query is the route to specificity (Guidelines I.A.9.b, I.B.18).

ReviewQ65.0, Q65.1, Q65.3, Q65.4, Q65.6, Q65.8

Documentation: Both the condition Q65.5 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewR29.4

Documentation: The record documents the condition on one side only.

Coding question: Which code in this family applies?

Path: Select the sibling code for the documented side.

Reason: Laterality is assigned from the documented side; the unspecified-side code is for records that state no side (Guidelines I.B.13).

ReviewQ65.4 · bilateral

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Congenital partial dislocation of hip, unspecified is a billable ICD-10-CM diagnosis code (Q65.5).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (1)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name Q65.5 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 3 Excludes1 notes across 2 chapters: M21 — Other acquired deformities of limbs (via Q65.-), M24.3 — Pathological dislocation of joint, not elsewhere classified (via Q65.-), R29.4 — Clicking hip (via Q65.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Excludes2 note: M95 — Other acquired deformities of musculoskeletal system and connective tissue (via Q65.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 3 MS-DRGs: DRG 564 (MDC 08), DRG 565 (MDC 08), DRG 566 (MDC 08).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):MAL008 — Musculoskeletal congenital conditions (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same condition, opposite side

Same category and title, differing only in which side of the body is affected.

Q65.4 — Congenital partial dislocation of hip, bilateralCompare Q65.5 vs Q65.4 →

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Musculoskeletal congenital conditions).

Q65.00 — Congenital dislocation of unspecified hip, unilateral, Q65.01 — Congenital dislocation of right hip, unilateral, Q65.02 — Congenital dislocation of left hip, unilateral, Q65.1 — Congenital dislocation of hip, bilateral, Q65.2 — Congenital dislocation of hip, unspecified, Q65.30 — Congenital partial dislocation of unspecified hip, unilateral, Q65.31 — Congenital partial dislocation of right hip, unilateral, Q65.32 — Congenital partial dislocation of left hip, unilateral, Q65.4 — Congenital partial dislocation of hip, bilateral, Q65.6 — Congenital unstable hip, Q65.81 — Congenital coxa valga, Q65.82 — Congenital coxa vara, Q65.89 — Other specified congenital deformities of hip, Q65.9 — Congenital deformity of hip, unspecified, Q66.0 — Congenital talipes equinovarus, Q66.00 — Congenital talipes equinovarus, unspecified foot, Q66.01 — Congenital talipes equinovarus, right foot, Q66.02 — Congenital talipes equinovarus, left foot, Q66.1 — Congenital talipes calcaneovarus, Q66.10 — Congenital talipes calcaneovarus, unspecified foot, +245 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Dislocation”; these codes share that main term but sit in a different category of the Tabular List.

M24.45 — Recurrent dislocation, hip (recurrent, hip), M24.46 — Recurrent dislocation, knee (recurrent, knee), M24.47 — Recurrent dislocation, ankle, foot and toes (recurrent, toe), M24.49 — Recurrent dislocation, other specified joint (recurrent, specified site NEC), M24.85 — Other specific joint derangements of hip, not elsewhere classified (hip, developmental), M43.3 — Recurrent atlantoaxial dislocation with myelopathy (recurrent, vertebra, atlantoaxial, with myelopathy), M43.4 — Other recurrent atlantoaxial dislocation (recurrent, vertebra, atlantoaxial), M43.5 — Other recurrent vertebral dislocation (recurrent, vertebra), P11.5 — Birth injury to spine and spinal cord (spine, due to birth trauma), Q12.1 — Congenital displaced lens (lens, congenital), Q68.2 — Congenital deformity of knee (knee, congenital), Q68.8 — Other specified congenital musculoskeletal deformities (congenital NEC), Q74.1 — Congenital malformation of knee (patella, congenital), Q74.2 — Other congenital malformations of lower limb(s), including pelvic girdle (sacroiliac, congenital), Q76.49 — Other congenital malformations of spine, not associated with scoliosis (spine, congenital), S03.0 — Dislocation of jaw (jaw), S03.1 — Dislocation of septal cartilage of nose (nose), S03.2 — Dislocation of tooth (tooth), S05.8X — Other injuries of eye and orbit (lens, traumatic), S13.101 — Dislocation of unspecified cervical vertebrae (vertebra, cervical), +126 more

Contextual Map

Every relationship of Q65.5 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run Q65.5 with these 4 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 08 — Diseases and Disorders of the Musculoskeletal System and Connective Tissue[MDC crossing]: “Diseases and Disorders of the Musculoskeletal System and Connective Tissue — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 18,508 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

  • Dislocation (articular), hip, congenital (total), partial[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (18)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "Q65.5 — Congenital partial dislocation of hip, unspecified." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/q65.5-congenital-partial-dislocation-of-hip-unspecified

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Congenital partial dislocation of hip, unspecified

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Q65.5 in its code family, with their registry titles.

View all codes in the Q65 family