ICD-10-CM 2027
ICD-10 code for cauda equina anomaly
From the official ICD-10-CM alphabetic index entry “Anomaly, anomalous (congenital) (unspecified type) › cauda equina”. Page updated September 29, 2026.
About coding cauda equina anomaly
The ICD-10-CM code for cauda equina anomaly is Q06.3 (Other congenital cauda equina malformations).
Within Q06, choose Q06.3 (Other congenital cauda equina malformations) only when documentation doesn't support a more specific option: Amyelia (Q06.0), hypoplasia and dysplasia of spinal cord (Q06.1), Diastematomyelia (Q06.2), Hydromyelia (Q06.4), other specified congenital malformations of spinal cord (Q06.8) and congenital malformation of spinal cord, unspecified (Q06.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
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 cauda equina anomaly ICD-10 codes
What is the ICD-10 code for cauda equina anomaly?
- Q06.3 — Other congenital cauda equina malformations.
Is Q06.3 billable?
- Yes. Q06.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q06.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q06.3 as a principal diagnosis.
Is Q06.3 a CC or MCC?
- No. Q06.3 is neither a CC nor an MCC under MS-DRG v44.0.