G31.8
Non-billableOther specified degenerative diseases of nervous system
Other specified degenerative diseases of nervous system
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- Reye's syndrome (G93.7)
Use Additional Code
Additional codes that should follow this code
- code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
- dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
- dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
- dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
- dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
- dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
- mild neurocognitive disorder due to known physiological condition (F06.7-)
Child Codes (8)
G31.80Leukodystrophy, unspecified
G31.81Alpers disease
G31.82Leigh's disease
G31.83Neurocognitive disorder with Lewy bodies
G31.84Mild cognitive impairment of uncertain or unknown etiology
G31.85Corticobasal degeneration
G31.86Alexander disease
G31.89Other specified degenerative diseases of nervous system
Also Known As / Clinical Terms
Frequently Asked Questions
What is the ICD-10 code for other specified degenerative diseases of nervous system?
The ICD-10-CM code for other specified degenerative diseases of nervous system is G31.8. The full clinical description is "Other specified degenerative diseases of nervous system". G31.8 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G31.8 mean?
ICD-10-CM code G31.8 represents "Other specified degenerative diseases of nervous system". It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G31.8 a billable code?
No, G31.8 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 8 child codes under G31.8.
What chapter is G31.8 in?
G31.8 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What are the subcategories under G31.8?
G31.8 has 8 child codes, including: G31.80 (Leukodystrophy, unspecified), G31.81 (Alpers disease), G31.82 (Leigh's disease), G31.83 (Neurocognitive disorder with Lewy bodies), and 4 more.
Are additional codes required with G31.8?
Yes, when using G31.8 you should also code: code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:; dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4); dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-); dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3); dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2); dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0); mild neurocognitive disorder due to known physiological condition (F06.7-).
What are the UMLS CUIs for G31.8?
G31.8 is linked to 1 UMLS Concept Unique Identifier: C0477365. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.