AutoICD API

Q99

Non-billable

Other chromosome abnormalities, not elsewhere classified

Other chromosome abnormalities, not elsewhere classified

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Child Codes

5

Coding Notes

Excludes 2

Conditions not included here, but the patient may have both

  • inborn errors of metabolism (E70-E88)
  • mitochondrial metabolic disorders (E88.4-)

Child Codes (5)

Q99.0

Chimera 46, XX/46, XY

BillableQ99.1

46, XX true hermaphrodite

BillableQ99.2

Fragile X chromosome

BillableQ99.8

Other specified chromosome abnormalities

BillableQ99.9

Chromosomal abnormality, unspecified

Billable

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is the ICD-10 code for other chromosome abnormalities, not elsewhere classified?

The ICD-10-CM code for other chromosome abnormalities, not elsewhere classified is Q99. The full clinical description is "Other chromosome abnormalities, not elsewhere classified". Q99 is a non-billable header code. Use a more specific child code for billing purposes.

What does ICD-10 code Q99 mean?

ICD-10-CM code Q99 represents "Other chromosome abnormalities, not elsewhere classified". It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a non-billable header code. Use a more specific child code for billing purposes.

Is Q99 a billable code?

No, Q99 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under Q99.

What chapter is Q99 in?

Q99 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).

What are the subcategories under Q99?

Q99 has 5 child codes, including: Q99.0 (Chimera 46, XX/46, XY), Q99.1 (46, XX true hermaphrodite), Q99.2 (Fragile X chromosome), Q99.8 (Other specified chromosome abnormalities), and 1 more.

What are the UMLS CUIs for Q99?

Q99 is linked to 1 UMLS Concept Unique Identifier: C0495659. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

Try FreeView API Docs

Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.