Is ICD-10-CM code G36 billable?

No, G36 (Other acute disseminated demyelination) 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 G36 belong to?

G36 belongs to Chapter 6 of the ICD-10-CM tabular list: G00–G99 (Diseases of the Nervous System).

G36Not billable, use a more specific code below

Other acute disseminated demyelination

In Demyelinating diseases of the central nervous system (G35-G37), chapter 6: Diseases of the Nervous System

4 billable codes under G36: all are a CC; all map to HCC 198 (Multiple Sclerosis).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

Excludes1: not coded here, use a different code

postinfectious encephalitis and encephalomyelitis NOS (G04.01)

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.

Covers default dominant or nondominant side for hemiplegia and monoplegia, and use and sequencing of G89 pain codes, including postoperative, chronic, and neoplasm-related pain.

Dominant/nondominant side (page 45)
Pain - Category G89 (page 45)

Read Section I.C.6 (page 45)

All codes under G36

G36 can't be used on a claim. Pick a billable code below; grey headings group them.

G36 MS-DRGs

As the principal diagnosis, the billable codes under G36 group to MS-DRG 058, 059, 060, 974, 975, or 976 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 058 Multiple Sclerosis and Cerebellar Ataxia with MCC (4 of 4 codes)
DRG 059 Multiple Sclerosis and Cerebellar Ataxia with CC (4 of 4 codes)
DRG 060 Multiple Sclerosis and Cerebellar Ataxia without CC/MCC (4 of 4 codes)
DRG 974 HIV with Major Related Condition with MCC (1 of 4 codes)
DRG 975 HIV with Major Related Condition with CC (1 of 4 codes)
DRG 976 HIV with Major Related Condition without CC/MCC (1 of 4 codes)

About the condition

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

Degenerative Nerve Diseases

Degenerative nerve diseases affect many of your body's activities, such as balance, movement, talking, breathing, and heart function. Many of these diseases are genetic. Sometimes the cause is a medical condition such as alcoholism, a tumor, or a stroke. Other causes may include toxins, chemicals, and viruses. Sometimes the cause is unknown.

Code history

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