Coding and coverage · ICD-10-CM
Instructional notes
Chapter 6
Excludes2Not included here: the patient may have both; report both when both are present.
- 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)
This code
Code also
- , if applicable, associated disorders such as:
- developmental disorders of scholastic skills (F81.-)
- developmental disorder of speech and language (F80.-)
- epilepsy, by specific type (G40.-)
- intellectual disabilities (F70-F79)
- other neurodevelopmental disorder (F88)
- pervasive developmental disorders (F84.-)
Inclusion terms
- Early infantile epileptic encephalopathy
Chapter 6: Diseases of the nervous system · G89-G99 Other disorders of the nervous system (G89-G99)
Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.
Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.