FY2027 ICD-10-CM reference

Q05.5: Cervical spina bifida without hydrocephalus

By the HCC Buddy Coding Team

The official ICD-10-CM descriptor is Cervical spina bifida without hydrocephalus. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.

Billable code. Verified against the official FY2027 order file.

CMS-HCC V28

HCC 182: Spinal Cord Disorders/Injuries · RAF 0.478, Community Non-Dual Aged (CNA)

Payment year 2027, 2026 dates of service. HCC from the CMS 2027 Initial ICD-10-CM Mappings; RAF from the CMS-HCC V28 relative factors. For 2027 dates of service, CMS has not yet published the payment year 2028 mappings.

CMS-HCC V24

Not used for payment year 2027 Medicare Advantage payment

ESRD

HCC 72: Spinal Cord Disorders/Injuries

Coefficient pending: payment year 2027 coefficients for this model are not yet verified, so no RAF is shown. Mapping: PY2026 CMS mapping; CMS 2027 initial file unchanged.

PACE

Source verification pending

RxHCC

HCC 155: Spinal Cord Disorders

Coefficient pending: payment year 2027 coefficients for this model are not yet verified, so no RAF is shown. Mapping: PY2026 CMS mapping; CMS 2027 initial file unchanged.

HHS-HCC

HCC 114: Spina Bifida and Other Brain/Spinal/Nervous System Congenital Anomalies

RAF not applicable: HHS-HCC weights vary by metal level. Mapping: HHS-HCC 2026 benefit year.

FY2027 Tabular instructions

Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.

Instructional note

Codes from this chapter are not for use on maternal records

Source: Q00-QA1 (chapter, inherited).

Excludes2

inborn errors of metabolism (E70-E88)

Source: Q00-QA1 (chapter, inherited).