Q07.8 Other specified congenital malformations of nervous system

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Agenesis of nerve
• Displacement of brachial plexus
• Jaw-winking syndrome
• Marcus Gunn's syndrome

Applies from Q07 Other congenital malformations of nervous system

Excludes2 (not included here)

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

Risk adjustment (HCC)

• CMS-HCC V28: HCC 182 — Spinal Cord Disorders/Injuries
• CMS-HCC V22: HCC 72 — Spinal Cord Disorders/Injuries
• RxHCC V08: HCC 155 — Spinal Cord Disorders
• ESRD V24: HCC 72

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 742.8 Other specified congenital anomalies of nervous system (approximate)

Code annotations containing back-references to Q07.8

Back-references to Q07

• Type 1 Excludes: G91 Hydrocephalus ("Arnold-Chiari syndrome with hydrocephalus (Q07.-)")

Diagnosis Index entries for Q07.8

• Accessory (congenital) › nervous system, part NEC
• Adhesions, adhesive (postinfective) › meninges (cerebral) (spinal) › congenital
• Agenesis › nerve
• Agenesis › nervous system, part NEC
• Agenesis › nuclear
• Anomaly, anomalous (congenital) (unspecified type) › acoustic nerve
• Anomaly, anomalous (congenital) (unspecified type) › choroid › plexus
• Anomaly, anomalous (congenital) (unspecified type) › meningeal bands or folds › constriction of
• Anomaly, anomalous (congenital) (unspecified type) › nerve › acoustic
• Anomaly, anomalous (congenital) (unspecified type) › nerve › optic
• Anomaly, anomalous (congenital) (unspecified type) › optic › nerve
• Anomaly, anomalous (congenital) (unspecified type) › sense organs NEC
• Anomaly, anomalous (congenital) (unspecified type) › spine, spinal NEC › nerve root
• Deformity › choroid (congenital) › plexus
• Displacement, displaced › brachial plexus (congenital)
• Distortion (s) (congenital) › nerve
• Gunn's syndrome
• Jaw-winking phenomenon or syndrome
• Malformation (congenital) › choroid (congenital) › plexus
• Malformation (congenital) › spinal › nerve root
• Malposition › congenital › brachial plexus
• Malposition › congenital › nerve
• Malposition › congenital › nervous system NEC
• Marcus Gunn's syndrome
• Phenomenon › jaw-winking
• Syndrome › jaw-winking

Nearby codes

• Q07.0 Arnold-Chiari syndrome
• Q07.00 Arnold-Chiari syndrome without spina bifida or hydrocephalus
• Q07.01 Arnold-Chiari syndrome with spina bifida
• Q07.02 Arnold-Chiari syndrome with hydrocephalus
• Q07.03 Arnold-Chiari syndrome with spina bifida and hydrocephalus
• Q07.8 Other specified congenital malformations of nervous system (this code)
• Q07.9 Congenital malformation of nervous system, unspecified