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ICD-10-CM 2027 diagnosis code

Q43Other congenital malformations of intestine

Not billable — use a more specific code

Q43 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Q43

Q43 is the ICD-10-CM diagnosis code for other congenital malformations of intestine. It belongs to block Q38-Q45 (other congenital malformations of the digestive system) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Q43.0 ((hypertrophic)), Q43.1 (disease), Q43.2 (colon), Q43.3 (fixation), Q43.4 (intestine), Q43.5 (anus), Q43.6 (anus), Q43.7 (cloaca) and 2 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under Q43

Notes that apply from higher levels

Instructions written at a parent level also apply to Q43.

Broader instructions also apply from Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Q43

Is Q43 billable?

No. Q43 is a header code. Report one of its more specific subcodes instead.