2027 ICD-10-CM Diagnosis Code Q79.62Hypermobile Ehlers-Danlos syndrome

ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q79

ICD-10-CM Q79.62
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Q79.62 is a billable ICD-10-CM diagnosis code for hypermobile Ehlers-Danlos syndrome. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 5 closely related codes. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Musculoskeletal congenital conditions.

Q79.62 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 84 for payment year 2027.

Code Identity

ICD-10-CM Code
Q79.62
Billable Status
Yes — Valid for Submission
Code Describes
Hypermobile Ehlers-Danlos syndrome
Short Description
Hypermobile Ehlers-Danlos syndrome
Same as the full description in the CMS dataset.
Parent Code
Q79.6
Ehlers-Danlos syndromes

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ65-Q79Congenital malformations and deformations of the musculoskeletal system
CategoryQ79Congenital malformations of musculoskeletal system, not elsewhere classified
This CodeQ79.62Hypermobile Ehlers-Danlos syndrome

Present on Admission (POA)Billing

Q79.62 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Congenital malformations and deformations of the musculoskeletal system (Q65-Q79).

Medicare Risk Adjustment (HCC)Billing

Q79.62 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
no payment category in the model that pays 100% of MA risk scores
Prior Model (CMS-HCC V24)
Not mapped under V24
this diagnosis newly risk-adjusts under the V28 model
Part D (RxHCC)
RxHCC 84 — Systemic Lupus Erythematosus and Other Systemic Connective Tissue Disorders
also risk-adjusts in the Part D prescription drug model (V08)

Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Hypermobile Ehlers-Danlos syndrome
  • Hypermobility syndrome
  • Laxity of ligament

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q79.62: its own notes plus those printed at Q79 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Hypermobile EDS (hEDS)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Q79 Congenital malformations of musculoskeletal system, not elsewhere classified applies to 14 codes
  • congenital (sternomastoid) torticollis (Q68.0)
From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Q79.62, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming Q79.62: they are not reported together with it, unless the two conditions are unrelated.

  • Q82.8 Other specified congenital malformations of skin
    Ehlers-Danlos syndromes (Q79.6-) names Q79.6-, which includes this code
  • Q87.A Loeys-Dietz syndrome
    Ehlers-Danlos syndrome (Q79.6) names Q79.6, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming Q79.62: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block E70-E88 Metabolic disorders
    Ehlers-Danlos syndromes (Q79.6-) names Q79.6-, which includes this code
  • M35.7 Hypermobility syndrome
    Ehlers-Danlos syndromes (Q79.6-) names Q79.6-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

Ehlers-Danlos Syndrome

Ehlers-Danlos syndrome (EDS) is a group of inherited disorders that weaken connective tissues. Connective tissues are proteins that support skin, bones, blood vessels, and other organs.

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement Q79.62 replaces the following previously assigned code(s):

  • Q79.6 - Ehlers-Danlos syndrome
  • Q79.6 - Ehlers-Danlos syndromes
FY 2020AddedAdded to the ICD-10-CM code setEffective October 1, 2019.
FY 2021–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q79.62Overview

What is the ICD-10 code for hypermobile Ehlers-Danlos syndrome?

The ICD-10-CM code for hypermobile Ehlers-Danlos syndrome is Q79.62 (sometimes written as Q7962). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Q79.62 (Ehlers-Danlos syndromes) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hypermobile Ehlers-Danlos syndrome on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Q79.62 group to?

When hypermobile Ehlers-Danlos syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 566, 565, with relative weights from 0.7374 to 1.4909 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q79.62 a CC or MCC?

CMS lists Q79.62 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 5 closely related codes in its exclusion list.

Is Q79.62 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 hypermobile Ehlers-Danlos syndrome on inpatient claims. The code appears in the Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) range of the CMS exempt list.

Does Q79.62 risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage: Q79.62 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 84 (Systemic Lupus Erythematosus and Other Systemic Connective Tissue Disorders).