Q03.9

Congenital hydrocephalus, unspecified

Billable FY2026 2025-10-01 → 2026-09-30

This is the unspecified option. 3 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.

Exclusions 4 never code together

Q03code

Excludes1

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Instructional notes 1

Q03code

Includes

Index entries leading here 9

Absence (of) (organ or part) (complete or partial)
- skull bone (congenital) Q75.8
  - with
    - hydrocephalus Q03.9
Agenesis
- skull (bone) Q75.8
  - with
    - hydrocephalus Q03.9
Anomaly, anomalous (congenital) (unspecified type) Q89.9
- bone Q79.9
  - skull Q75.9
    - with
      - hydrocephalus Q03.9
- skull Q75.9
  - with
    - hydrocephalus Q03.9
Degeneration, degenerative
- brain (cortical) (progressive) G31.9
  - in
    - congenital hydrocephalus Q03.9
Imperfect
- closure (congenital)
  - skull Q75.009
    - with
      - hydrocephalus Q03.9
Deformity Q89.9
- skull (acquired) M95.2
  - congenital Q75.8
    - with
      - hydrocephalus Q03.9
Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) G91.9
- congenital (external) (internal) Q03.9
- newborn Q03.9
Distortion (s) (congenital)
- skull bone (s) NEC Q75.8
  - with
    - hydrocephalus Q03.9
Hypoplasia, hypoplastic
- skull (bone) Q75.8
  - with
    - hydrocephalus Q03.9

Alongside this code 3 same parent — Q03

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

CMS22HCC72 CMS28HCC182 ESRD21HCC72 ESRD24HCC72 RX08HCC155

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.