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Home/Diagnosis/ICD-10 Coding for Normal Pressure Hydrocephalus

ICD-10 Coding for Normal Pressure Hydrocephalus

G91.2
G91.3

Complete ICD-10-CM coding and documentation guide for icd-10 coding for normal pressure hydrocephalus includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
NPH
Idiopathic Normal Pressure Hydrocephalus
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Key Information: ICD-10 Coding for Normal Pressure Hydrocephalus

Essential facts and insights about ICD-10 Coding for Normal Pressure Hydrocephalus

Use ICD-10 code G91.2 for idiopathic normal pressure hydrocephalus, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Idiopathic normal pressure hydrocephalus

Billable Code
G91.2
Billable

Diagnostic Criteria

  • • Presence of gait disturbance, cognitive decline, and urinary incontinence with ventriculomegaly.

Applicable To

  • • Idiopathic normal pressure hydrocephalus

Important Notes

  • • Ensure documentation clearly states idiopathic nature and presence of the Hakim triad.

Posttraumatic hydrocephalus

Billable Code
G91.3
Billable

Diagnostic Criteria

  • • History of trauma or CNS infection
  • • Ventriculomegaly on imaging

Applicable To

  • • Hydrocephalus following trauma

Important Notes

  • • Sequence the underlying condition before G91.3.
Frequently Asked Questions

What is the ICD-10 code for normal pressure hydrocephalus?

The ICD-10 code for idiopathic normal pressure hydrocephalus is G91.2. It is used when the condition is confirmed as idiopathic with clinical validation.

How do you differentiate idiopathic NPH from posttraumatic hydrocephalus?

Idiopathic NPH (G91.2) is diagnosed without a history of trauma, while posttraumatic hydrocephalus (G91.3) follows trauma or CNS infection.

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