2026 ICD-10-CM Diagnosis Code Q69.1Accessory thumb(s)

ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q69

ICD-10-CM Q69.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q69.1 is a billable ICD-10-CM diagnosis code for accessory thumb(s). 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
Q69.1
Billable Status
Yes — Valid for Submission
Code Describes
Accessory thumb(s)
Short Description
Accessory thumb(s)
Same as the full description in the CMS dataset.
Parent Code
Q69
Polydactyly

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ65-Q79Congenital malformations and deformations of the musculoskeletal system
CategoryQ69Polydactyly
This CodeQ69.1Accessory thumb(s)

Present on Admission (POA)Billing

Q69.1 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 polydactyly of a triphalangeal thumb
  • Bilateral polydactyly of thumb
  • Bilateral triphalangeal thumb
  • Hyperphalangy
  • Polydactyly of biphalangeal thumb
  • Polydactyly of left thumb
  • Polydactyly of right thumb
  • Polydactyly of triphalangeal thumb
  • Radial polydactyly
  • Radial polydactyly Wassel 1
  • Radial polydactyly Wassel 2
  • Radial polydactyly Wassel 3
  • Radial polydactyly Wassel 4
  • Radial polydactyly Wassel 5
  • Radial polydactyly Wassel 6
  • Radial polydactyly Wassel 7
  • Triphalangeal thumb

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.

    • Accessory(congenital)
      • thumb
    • Polydactylism, polydactyly
      • thumb
    • Supernumerary(congenital)
      • thumb

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

  • Polydactyly

    a congenital anomaly of the hand or foot, marked by the presence of supernumerary digits.

  • Short Rib-Polydactyly Syndrome

    a syndrome inherited as an autosomal recessive trait and incompatible with life. the main features are narrow thorax, short ribs, scapular and pelvic dysplasia, and polydactyly.

  • Smith-Lemli-Opitz Syndrome

    an autosomal recessive disorder of cholesterol metabolism. it is caused by a deficiency of 7-dehydrocholesterol reductase, the enzyme that converts 7-dehydrocholesterol to cholesterol, leading to an abnormally low plasma cholesterol. this syndrome is characterized by multiple congenital abnormalities, growth deficiency, and intellectual disability.

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 Q69.1 to ICD-9-CMHistory

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

ICD-9-CM
755.01 Polydactyly, fingers
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 Q69.1Overview

Is Q69.1 (Polydactyly) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report accessory thumb(s) on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Q69.1 group to?

When accessory thumb(s) 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 Q69.1 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 accessory thumb(s) on inpatient claims.

What is the ICD-9 equivalent of Q69.1?

Under the General Equivalence Mappings, accessory thumb(s) converts to ICD-9-CM 755.01 (polydactyly, fingers). 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.