G09
Billable codeSequelae of inflammatory diseases of central nervous system
The ICD-10 code for sequelae of inflammatory diseases of central nervous system is G09.
Clinical notes
Code first
This code represents a manifestation of an underlying disease. Coding convention requires the underlying (etiology) code to be sequenced first, with this code listed second.
- condition resulting from (sequela) of inflammatory diseases of central nervous system
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code represents a manifestation. Documentation should identify the underlying condition, which must be coded first.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G00Bacterial meningitis, not elsewhere classifiednon-billable header
- G01Meningitis in bacterial diseases classified elsewhere
- G02Meningitis in other infectious and parasitic diseases classified elsewhere
- G03Meningitis due to other and unspecified causesnon-billable header
- G04Encephalitis, myelitis and encephalomyelitisnon-billable header
- G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewherenon-billable header
- G06Intracranial and intraspinal abscess and granulomanon-billable header
- G07Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere
- G08Intracranial and intraspinal phlebitis and thrombophlebitis
- G09Sequelae of inflammatory diseases of central nervous system
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 326Approximate match
Associated MS-DRGs
G09 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.