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Q83 ICD-10-CA category: Congenital malformations of breast

Q83 isn’t a code on its own. Choose one of the 6 codes beneath it, the one the documentation supports.

Official description

Q83

Congenital malformations of breast

ICD-10-CA · Canada

Codes in Q83

Q83 isn’t a code on its own. Open the code that matches what the note documents.

Q83.0Congenital absence of breast with absent nippleQ83.1Accessory breastQ83.2Absent nippleQ83.3Accessory nippleQ83.8Other congenital malformations of breastQ83.9Congenital malformation of breast, unspecified

Notes for Q83

As CIHI prints them, with any note Q83 takes from the headings above it.

Excludes

Conditions classified elsewhere.

  • Absence of pectoral muscle (Q79.8)
  • Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)

Where Q83 sits

  1. 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  2. 2Block Q80-Q89Other congenital malformations
  3. 3Category Q83Congenital malformations of breast

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See Q83 in the CIHI source

Frequently asked questions

Is Q83 a valid ICD-10-CA code?

No. Q83 (Congenital malformations of breast) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 6 codes; record the one the documentation supports.

Where is Q83 in ICD-10-CA?

Q83 sits under Q80-Q89 Other congenital malformations, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).

What coding notes apply to Q83?

ICD-10-CA lists Excludes notes for Q83, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside Q83

Q80Congenital ichthyosisQ81Epidermolysis bullosaQ82Other congenital malformations of skinQ84Other congenital malformations of integumentQ85Phakomatoses, not elsewhere classifiedQ86Congenital malformation syndromes due to known exogenous causes, not elsewhere classifiedQ87Other specified congenital malformation syndromes affecting multiple systemsQ89Other congenital malformations, not elsewhere classified