2026 ICD-10-CM Diagnosis Code Q79Congenital malformations of musculoskeletal system, not elsewhere classified

ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q79

ICD-10-CM Q79
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q79 is a non-billable ICD-10-CM category code for congenital malformations of musculoskeletal system, not elsewhere classified, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q79.0, Q79.1, Q79.2, and Q79.3.

Code Identity

ICD-10-CM Code
Q79
Billable Status
No — Non-Billable Category
Code Describes
Congenital malformations of musculoskeletal system, not elsewhere classified
Chapter
Q65-Q79
Congenital malformations and deformations of the musculoskeletal system

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ65-Q79Congenital malformations and deformations of the musculoskeletal system
CategoryQ79Congenital malformations of musculoskeletal system, not elsewhere classified
This CodeQ79Congenital malformations of musculoskeletal system, not elsewhere classified

Specific Coding for Congenital malformations of musculoskeletal system, NECOverview

Non-specific codes like Q79 require more characters. Use one of these billable codes instead:

  • Use Q79.0 for Congenital diaphragmatic hernia

  • Use Q79.1 for Other congenital malformations of diaphragm

  • Use Q79.2 for Exomphalos

  • Use Q79.3 for Gastroschisis

  • Use Q79.4 for Prune belly syndrome

  • Q79.5 for Other congenital malformations of abdominal wall

  • Use Q79.51 for Congenital hernia of bladder

  • Use Q79.59 for Other congenital malformations of abdominal wall

  • Q79.6 for Ehlers-Danlos syndromes

  • Use Q79.60 for Ehlers-Danlos syndrome, unspecified

  • Use Q79.61 for Classical Ehlers-Danlos syndrome

  • Use Q79.62 for Hypermobile Ehlers-Danlos syndrome

  • Use Q79.63 for Vascular Ehlers-Danlos syndrome

  • Use Q79.69 for Other Ehlers-Danlos syndromes

  • Use Q79.8 for Other congenital malformations of musculoskeletal system

  • Use Q79.9 for Congenital malformation of musculoskeletal system, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 2 Excludes

  • congenital sternomastoid torticollis Q68.0

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.

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 Q79Overview

Is Q79 a billable code?

No. This is a category header that groups the codes for congenital malformations of musculoskeletal system, not elsewhere classified, and headers cannot be submitted on claims. Claims for congenital malformations of musculoskeletal system, not elsewhere classified need a more specific code from this category, such as Q79.0, Q79.1, and Q79.2.