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

Compare with another code for Q69.1Check this code on a claim

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

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too, and is marked with where it comes from.

The tabular list publishes no instructional note for this code itself.

Where it sits Source: CMS/NCHS

Under:Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-QA1) (Q00-QA1)Q65-Q79 Congenital malformations and deformations of the musculoskeletal systemQ69 Polydactyly

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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 v44, 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.

Don’t confuse Q69.1 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of Q69.1 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

  • Q69.9— Specificity relationship (Review)

    Overlapping diagnoses in the same category.

    Overlapping codes in the same category — the documentation decides which is the more specific fit.

    What moves you there: A record that documents no more than “Polydactyly, unspecified” takes Q69.9; specificity in the record moves it back here.

    Full comparison: Q69.1 vs Q69.9 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Accessory thumb(s) is a billable ICD-10-CM diagnosis code (Q69.1).

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

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-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name Q69.1 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 4 Excludes1 notes across 2 chapters: M20 — Acquired deformities of fingers and toes (via Q69.-), M21 — Other acquired deformities of limbs (via Q69.-), M24.3 — Pathological dislocation of joint, not elsewhere classified (via Q69.-), Q74 — Other congenital malformations of limb(s) (via Q69.-).

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 Q69.-).

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

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 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 clinical category (CCSR)

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

Q67.8 — Other congenital deformities of chest, Q68.0 — Congenital deformity of sternocleidomastoid muscle, Q68.1 — Congenital deformity of finger(s) and hand, Q68.2 — Congenital deformity of knee, Q68.3 — Congenital bowing of femur, Q68.4 — Congenital bowing of tibia and fibula, Q68.5 — Congenital bowing of long bones of leg, unspecified, Q68.6 — Discoid meniscus, Q68.8 — Other specified congenital musculoskeletal deformities, Q69.0 — Accessory finger(s), Q69.2 — Accessory toe(s), Q69.9 — Polydactyly, unspecified, Q70.00 — Fused fingers, unspecified hand, Q70.01 — Fused fingers, right hand, Q70.02 — Fused fingers, left hand, Q70.03 — Fused fingers, bilateral, Q70.10 — Webbed fingers, unspecified hand, Q70.11 — Webbed fingers, right hand, Q70.12 — Webbed fingers, left hand, Q70.13 — Webbed fingers, bilateral, +245 more

Same Index main term, other category

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

Q52.10 — Doubling of vagina, unspecified (vagina), Q52.4 — Other congenital malformations of vagina (hymen), Q52.79 — Other congenital malformations of vulva (vulva), Q52.8 — Other specified congenital malformations of female genitalia (genital organ, female), Q55.29 — Other congenital malformations of testis and scrotum (testis), Q55.8 — Other specified congenital malformations of male genital organs (genital organ, male), Q62.5 — Duplication of ureter (ureter), Q63.0 — Accessory kidney (kidney), Q64.79 — Other congenital malformations of bladder and urethra (bladder), Q64.8 — Other specified congenital malformations of urinary system (urinary organ or tract NEC), Q74.0 — Other congenital malformations of upper limb(s), including shoulder girdle (carpal bones), Q74.2 — Other congenital malformations of lower limb(s), including pelvic girdle (tarsal bones), Q74.8 — Other specified congenital malformations of limb(s) (sesamoid bones), Q75.8 — Other specified congenital malformations of skull and face bones (face bone), Q76.49 — Other congenital malformations of spine, not associated with scoliosis (vertebra), Q76.5 — Cervical rib (rib, cervical), Q76.6 — Other congenital malformations of ribs (rib), Q76.7 — Congenital malformation of sternum (sternum), Q79.8 — Other congenital malformations of musculoskeletal system (tendon), Q82.8 — Other specified congenital malformations of skin (skin tags), +40 more

Contextual Map

Every relationship of Q69.1 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 Q69.1 with these 5 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. 18,439 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Index entries

  • Accessory (congenital), thumb[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Polydactylism, polydactyly, thumb[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027
  • Supernumerary (congenital), thumb[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2027

Nearest codes

Change history

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

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Indexed Clinical Terms (3)

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.

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 FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 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 — v44 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-derived 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 editorial 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.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

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. "Q69.1 — Accessory thumb(s)." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/q69.1-accessory-thumbs

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Accessory thumb(s)

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, 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 Q69.1 in its code family, with their registry titles.

View all codes in the Q69 family