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G91
Non-billable

Hydrocephalus

Chapter 6: Diseases of the nervous system

Includes

1 item
  • acquired hydrocephalus

Excludes1

3 items
  • Arnold-Chiari syndrome with hydrocephalus (Q07.-)
  • congenital hydrocephalus (Q03.-)
  • spina bifida with hydrocephalus (Q05.-)

Coding Guidance

G91 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail. See Related Codes to drill down to more specific billable codes for appropriate reimbursement.

Additional Information from Parent Codes

The following information may apply to this code from its parent codes in the ICD-10 hierarchy. This information is important for proper coding and classification.

Parent Codes Referenced:

Excludes2

8 items

From G00-G99:

  • 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)
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