Is ICD-10-CM code Q07 billable?

No, Q07 (Other congenital malformations of nervous system) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code Q07 belong to?

Q07 belongs to Chapter 17 of the ICD-10-CM tabular list: Q00–Q99 (Congenital Malformations, Deformations and Chromosomal Abnormalities).

Q07Not billable, use a more specific code below

Other congenital malformations of nervous system

In Congenital malformations of the nervous system (Q00-Q07), chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities

6 billable codes under Q07: 2 are a CC; all map to HCC 182 (Spinal Cord Disorders/Injuries).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

Instructional notes

Excludes2: not included here, code separately if applicable

congenital central alveolar hypoventilation syndrome (G47.35)
familial dysautonomia [Riley-Day] (G90.1)
neurofibromatosis (nonmalignant) (Q85.0-)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Assign Q00-QA1 codes for documented congenital anomalies or genetic disorders at any age, coding non-inherent manifestations separately and sequencing Z38 first on the birth admission.

Read Section I.C.17 (page 74)

All codes under Q07

Q07 can't be used on a claim. Pick a billable code below; grey headings group them.

Q07 MS-DRGs

As the principal diagnosis, all 6 billable codes under Q07 group to MS-DRG 091, 092, 093, 791, or 793 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to Q07

Notes on these codes point to Q07.

G91 Excludes1: Arnold-Chiari syndrome with hydrocephalus (Q07.-)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Brain Malformations

Most brain malformations begin long before a baby is born. Something damages the developing nervous system or causes it to develop abnormally. Sometimes it's a genetic problem. In other cases, exposure to certain medicines, infections, or radiation during pregnancy interferes with brain development. Parts of the brain may be missing, abnormally small or large, or not fully developed.

Neural Tube Defects

Neural tube defects are birth defects of the brain, spine, or spinal cord. They happen in the first month of pregnancy, often before a woman even knows that she is pregnant. The two most common neural tube defects are spina bifida and anencephaly. In spina bifida, the fetal spinal column doesn't close completely. There is usually nerve damage that causes at least some paralysis of the legs. In anencephaly, most of the brain and skull do not develop. Babies with anencephaly are usually either stillborn or die shortly after birth. Another type of defect, Chiari malformation, causes the brain tissue to extend into the spinal canal.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.