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ICD-10-CM 2027

ICD-10 code for Nasofrontal encephalocele

Q01.1

Nasofrontal encephalocele

✓ Billable / specificCC — complication/comorbidity

From the official ICD-10-CM alphabetic index entry “Encephalocele › nasofrontal”. Page updated September 29, 2026.

About coding Nasofrontal encephalocele

The ICD-10-CM code for Nasofrontal encephalocele is Q01.1 (Nasofrontal encephalocele).

Within Q01 (encephalocele), Q01.1 is specifically for Nasofrontal encephalocele. Related codes cover frontal encephalocele (Q01.0), occipital encephalocele (Q01.2), of other sites (Q01.8) and unspecified (Q01.9).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239), DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 01 (Diseases and Disorders of the Nervous System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

Common questions about Nasofrontal encephalocele ICD-10 codes

What is the ICD-10 code for Nasofrontal encephalocele?

Q01.1 — Nasofrontal encephalocele.

Is Q01.1 billable?

Yes. Q01.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Q01.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Q01.1 as a principal diagnosis.

Is Q01.1 a CC or MCC?

Q01.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.