Q73Header code — not billable

Reduction defects of unspecified limb

Chapter
17. Congenital malformations, deformations and chromosomal abnormalities
Category
Q73
Effective date
October 1, 2026

Related codes in category Q73

Q73.0Congenital absence of unspecified limb(s)YesQ73.1Phocomelia, unspecified limb(s)YesQ73.8Other reduction defects of unspecified limb(s)Yes

Frequently asked questions

What is ICD-10 code Q73?

Q73 is an ICD-10-CM diagnosis code for Reduction defects of unspecified limb.

Is Q73 a billable code?

No. Q73 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is Q73 in?

Q73 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.

When did Q73 become effective?

Q73 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to Q73?

Q73 belongs to category Q73, which includes 3 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.