FY2027 ICD-10-CM reference
G37: Other demyelinating diseases of central nervous system
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Other demyelinating diseases of central nervous system. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
CMS-HCC V28
Not applicable to this nonbillable heading
CMS-HCC V24
Not applicable to this nonbillable heading
ESRD
Not applicable to this nonbillable heading
PACE
Not applicable to this nonbillable heading
RxHCC
Not applicable to this nonbillable heading
HHS-HCC
Not applicable to this nonbillable heading
More specific FY2027 codes
- G37.0: Diffuse sclerosis of central nervous systemBillable code
- G37.1: Central demyelination of corpus callosumBillable code
- G37.2: Central pontine myelinolysisBillable code
- G37.3: Acute transverse myelitis in demyelinating disease of central nervous systemBillable code
- G37.4: Subacute necrotizing myelitis of central nervous systemBillable code
- G37.5: Concentric sclerosis [Balo] of central nervous systemBillable code
- G37.8: Other specified demyelinating diseases of central nervous systemNonbillable heading
- G37.9: Demyelinating disease of central nervous system, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Excludes2
certain conditions originating in the perinatal period (P04-P96)
Source: G00-G99 (chapter, inherited).
Excludes2
certain infectious and parasitic diseases (A00-B99)
Source: G00-G99 (chapter, inherited).
Excludes2
complications of pregnancy, childbirth and the puerperium (O00-O9A)
Source: G00-G99 (chapter, inherited).
Excludes2
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
Source: G00-G99 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: G00-G99 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: G00-G99 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: G00-G99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: G00-G99 (chapter, inherited).
Compare the FY2027 additions, removals and billable-status changes
What does G37 mean in FY2027?
The official ICD-10-CM descriptor is Other demyelinating diseases of central nervous system. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is G37 billable in FY2027?
The FY2027 order file marks G37 as a nonbillable heading. Select a complete billable child code.
Does G37 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition