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FY2027 ICD-10-CM reference

Q05.7: Lumbar spina bifida without hydrocephalus

By the HCC Buddy Coding Team

The official ICD-10-CM descriptor is Lumbar 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

Source verification pending

PACE

Source verification pending

RxHCC

Source verification pending

HHS-HCC

Source verification pending

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).

Includes

hydromeningocele (spinal)

Source: Q05 (category, inherited).

Includes

meningocele (spinal)

Source: Q05 (category, inherited).

Includes

meningomyelocele

Source: Q05 (category, inherited).

Includes

myelocele

Source: Q05 (category, inherited).

Includes

myelomeningocele

Source: Q05 (category, inherited).

Includes

rachischisis

Source: Q05 (category, inherited).

Includes

spina bifida (aperta)(cystica)

Source: Q05 (category, inherited).

Includes

syringomyelocele

Source: Q05 (category, inherited).

Instructional note

code for any associated paraplegia (paraparesis) (G82.2-)

Source: Q05 (category, inherited).

Excludes1

Arnold-Chiari syndrome, type II (Q07.0-)

Source: Q05 (category, inherited).

Excludes1

spina bifida occulta (Q76.0)

Source: Q05 (category, inherited).

Instructional note

Lumbosacral spina bifida NOS

Source: Q05.7 (self, direct).

Source: CMS FY2027 Tabular List and Alphabetic Index.

Open Tabular instructions and code details

Compare the FY2027 additions, removals and billable-status changes

What does Q05.7 mean in FY2027?

The official ICD-10-CM descriptor is Lumbar 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.

Is Q05.7 billable in FY2027?

The FY2027 order file marks Q05.7 as billable. Check the complete Tabular instructions and documentation before assigning it.

Does Q05.7 map to an HCC?

In the CMS 2027 Initial ICD-10-CM Mappings (payment year 2027, 2026 dates of service), Q05.7 maps to CMS-HCC V28 HCC 182 (Spinal Cord Disorders/Injuries). For 2027 dates of service, CMS has not yet published the payment year 2028 mappings. ESRD, RxHCC, PACE and HHS-HCC mappings are still pending verification for FY2027.

Source: CMS FY2027 ICD-10-CM order file. Read the FY2027 Official Guidelines.

Review the FY2026 April edition