Question 1

Is G91 a billable ICD-10 code?

Accepted Answer

No, G91 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code G91 mean?

Accepted Answer

ICD-10-CM code G91 represents Hydrocephalus. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

What is the parent category for ICD-10 code G91?

Accepted Answer

The parent category for G91 is section:G89-G99 (Other disorders of the nervous system (G89-G99)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 4

What conditions are excluded from G91?

Accepted Answer

Code G91 has Type 1 Excludes (mutually exclusive conditions) including: Arnold-Chiari syndrome with hydrocephalus (Q07.-); congenital hydrocephalus (Q03.-); spina bifida with hydrocephalus (Q05.-). These conditions cannot be coded together with G91 as they represent different diagnoses.

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