G11.5 Hypomyelination - hypogonadotropic hypogonadism - hypodontia

The ICD-10-CM code for Hypomyelination - hypogonadotropic hypogonadism - hypodontia is G11.5 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G10-G14: Systemic atrophies primarily affecting the central nervous system (G10-G14)

Category G11

13 codes (11 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G11.5:

• Hypomyelination - hypogonadotropic hypogonadism - hypodontia
• Syndrome › 4H
• Leukodystrophy › pol III-related

Inclusion Terms

• 4H syndrome
• Pol III-related leukodystrophy

U.S. Hospital Utilization

G11.5 appeared in too few sampled U.S. inpatient stays in 2023 to report a national estimate (AHRQ suppresses counts of 10 or fewer) — a rare inpatient diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference G11.5 with the canonical source and edition:

G11.5 — Hypomyelination - hypogonadotropic hypogonadism - hypodontia. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/G11.5

Canonical URL: https://icd10codingpro.com/codes/G11.5