Q06.4 is the authoritative medical code for Hydromyelia. This classification is used in medical billing and clinical recording to specify the clinical criteria for hydromyelia (ICD-10-CM Q06.4), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Hydromyelia Q06.4 is a billable ICD-10-CM diagnosis code, valid for claim submission. It is classified under category Q06 (Other congenital malformations of spinal cord), within the Congenital malformations of the nervous system Q00-Q07 block, within Chapter 17, Congenital Malformations, Deformations and Chromosomal Abnormalities Q00-Q99. The official tabular list attaches no additional inclusion or exclusion notes to this code. Code selection within this family is differentiated by its related codes: Q06.0 Amyelia; Q06.1 (Hypoplasia and dysplasia of spinal cord); Q06.2 (Diastematomyelia); Q06.3 (Other congenital cauda equina malformations).
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Q06.4 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
Frequently Asked Questions (FAQ) & Clinical Guidance
What conditions are included under Q06.4?
Hydromyelia includes: Hydrorachis.
Codes in This Family (7)
Official ICD-10-CM classifications in the same code family as Q06.4, with their registry titles.
- Q06 — Other congenital malformations of spinal cord
- Q06.0 — Amyelia
- Q06.1 — Hypoplasia and dysplasia of spinal cord
- Q06.2 — Diastematomyelia
- Q06.3 — Other congenital cauda equina malformations
- Q06.8 — Other specified congenital malformations of spinal cord
- Q06.9 — Congenital malformation of spinal cord, unspecified
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: