742.9 NERVOUS SYSTEM ANOM NOS

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Code Information

Diagnosis Code: 742.9

Short Description: Nervous system anom NOS

Long Description: Unspecified congenital anomaly of brain, spinal cord, and nervous system

Code Classification:

Congenital anomalies (740–759)
- Congenital anomalies (740-759)
  - 742 Other congenital anomalies of nervous system
    - 742.9 Nervous system anom NOS

Code Version: 2015 ICD-9-CM

References to Index of Diseases and Injuries

The code 742.9 has the following ICD-9-CM references to the Index of Diseases and Injuries

Abnormal, abnormality, abnormalities - see also Anomaly
- development, developmental NEC 759.9
  - central nervous system 742.9

Anomaly, anomalous (congenital) (unspecified type) 759.9
- acoustic nerve 742.9
- brain 742.9
  - multiple 742.4
  - reduction 742.2
  - specified type NEC 742.4
  - vessel 747.81
- choroid 743.9
  - plexus 742.9
- dura 742.9
  - brain 742.4
  - spinal cord 742.59
- gyri 742.9
- meninges 742.9
  - brain 742.4
  - spinal 742.59
- nerve 742.9
  - acoustic 742.9
    - specified type NEC 742.8
  - optic 742.9
    - specified type NEC 742.8
  - specified type NEC 742.8
- nervous system NEC 742.9
  - brain 742.9
    - specified type NEC 742.4
  - specified type NEC 742.8
- neurological 742.9
- optic
  - nerve 742.9
- sense organs 742.9
  - specified type NEC 742.8
- spine, spinal 756.10
  - cord 742.9
    - meningocele (see also Spina bifida) 741.9
    - specified type NEC 742.59
    - spina bifida (see also Spina bifida) 741.9
    - vessel 747.82
  - nerve root 742.9

Deformity 738.9
- brain (congenital) 742.9
  - acquired 348.89
  - multiple 742.4
  - reduction 742.2
  - vessel (congenital) 747.81
- cerebral (congenital) 742.9
  - acquired 348.89
- choroid (congenital) 743.9
  - plexus (congenital) 742.9
    - acquired 349.2
- dura (congenital) 742.9
  - brain 742.4
    - acquired 349.2
  - spinal 742.59
    - acquired 349.2
- meninges or membrane (congenital) 742.9
  - brain 742.4
    - acquired 349.2
  - spinal (cord) 742.59
    - acquired 349.2
- nervous system (congenital) 742.9
- spinal
  - cord (congenital) 742.9
    - acquired 336.8
    - vessel (congenital) 747.82
  - nerve root (congenital) 742.9
    - acquired 724.9

Disease, diseased - see also Syndrome
- brain 348.9
  - congenital 742.9
- nervous system (central) 349.9
  - congenital 742.9
- spine, spinal 733.90
  - cord NEC 336.9
    - congenital 742.9

Dysplasia - see also Anomaly
- brain 742.9
- nervous system (general) 742.9
- spinal cord 742.9

Encephalopathy (acute) 348.30
- congenital 742.9

Lesion(s)
- brain 348.89
  - congenital 742.9
- nervous system 349.9
  - congenital 742.9
- spinal cord 336.9
  - congenital 742.9

Maldevelopment - see also Anomaly, by site
- brain 742.9

Malformation (congenital) - see also Anomaly
- nervous system (central) 742.9
- sense organs NEC 742.9
  - specified type NEC 742.8
- spinal cord 742.9

Paratyphoid (fever) - see Fever, paratyphoid

Crosswalk Information

The code 742.9 converts into the following ICD-10 code(s):

ICD-9 Code		ICD-10 Code	ICD-10 Description
742.9		Q07.9	Congenital malformation of nervous system, unspecified

This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code	ICD-9 Description
742.0	Encephalocele
742.1	Microcephalus
742.2	Congenital reduction deformities of brain
742.3	Congenital hydrocephalus
742.4	Other specified congenital anomalies of brain
742.51	Diastematomyelia
742.53	Hydromyelia
742.59	Other specified congenital anomalies of spinal cord
742.8	Other specified congenital anomalies of nervous system

This page was last updated on: 10/1/2014

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