G11.5
Hypomyelination - hypogonadotropic hypogonadism - hypodontia
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
G11code
G00-G99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 2
G11.5code
Inclusion terms
- 4H syndrome
- Pol III-related leukodystrophy
Index entries leading here 3
Alongside this code 8 same parent — G11
G11.0 Congenital nonprogressive ataxia G11.1 Early-onset cerebellar ataxia category G11.2 Late-onset cerebellar ataxia G11.3 Cerebellar ataxia with defective DNA repair G11.4 Hereditary spastic paraplegia G11.6 Leukodystrophy with vanishing white matter disease G11.8 Other hereditary ataxias G11.9 Hereditary ataxia, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.