Non-Billable / Non-Specific Code
ICD-10-CM G05 is the diagnosis code for Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere. This code falls under the section "Inflammatory diseases of the central nervous system" within Chapter 6 — Diseases of the nervous system (G00-G99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as G05. They are mutually exclusive:
Understanding where G05 sits in the ICD-10-CM classification helps ensure proper coding:
No, G05 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
G05 is the ICD-10-CM diagnosis code for "Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
G05 is located in Section G00-G09 — "Inflammatory diseases of the central nervous system" within Chapter 6 of the ICD-10-CM Tabular List.
G05 has 2 sub-code(s) that provide more specific detail: G05.3, G05.4.
Use G05 when the patients documented diagnosis matches "Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere is G05.
No, G05 is non-billable. Use a more specific sub-code for primary diagnosis billing.
G05 is in Chapter 6 of the ICD-10-CM Tabular List.
Type 1 Excludes for G05 include: adenoviral encephalitis, myelitis and encephalomyelitis (A85.1); encephalitis, myelitis and encephalomyelitis (in) measles (B05.0); enteroviral encephalitis, myelitis and encephalomyelitis (A85.0) and more.
Yes, G05 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.