Skip to content
HCC Buddy home

HCC Buddy Code Book

Skip to code book content
HCC Buddy
HCC Buddy
Alphabetic Index and Tabular path
HCC Buddy public API, FY2026 Apr updateSource load source requiredSource year 2026Updated 2026-04-01

Index trail

Microcephaly

See Tabular List: Q02

Q02, Microcephaly

Selected code, source checked for the selected effective period

Commonly confused codes

official source

Not listed for this effective period.

Code details and official notes
billableHCC mapped

Includes

official source
  • hydromicrocephaly
  • micrencephalon

Excludes 1

official source
  • Meckel-Gruber syndrome (Q61.9)

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

Code First

official source
  • , if applicable, congenital Zika virus disease

Use Additional

official source

Not listed for this effective period.

Code Also

official source

Not listed for this effective period.

7th character

official source

Not listed for this code in the selected Tabular payload.

Placeholder X

official source

Not listed for this code in the selected Tabular payload.

Laterality

official source

No laterality instruction is listed for this code in the selected Tabular payload.

Effective period

source required
  • FY2026 Apr update
  • Source year 2026
  • Updated 2026-04-01
  • HCC Buddy public API
HCC Buddy
HCC Buddy
Alphabetic Index and Tabular path
HCC Buddy public API, FY2026 Apr updateSource load source requiredSource year 2026Updated 2026-04-01

Index trail

Microcephaly

See Tabular List: Q02

Q02, Microcephaly

Selected code, source checked for the selected effective period

Commonly confused codes

official source

Not listed for this effective period.

Code details and official notes
billableHCC mapped

Includes

official source
  • hydromicrocephaly
  • micrencephalon

Excludes 1

official source
  • Meckel-Gruber syndrome (Q61.9)

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

Code First

official source
  • , if applicable, congenital Zika virus disease

Use Additional

official source

Not listed for this effective period.

Code Also

official source

Not listed for this effective period.

7th character

official source

Not listed for this code in the selected Tabular payload.

Placeholder X

official source

Not listed for this code in the selected Tabular payload.

Laterality

official source

No laterality instruction is listed for this code in the selected Tabular payload.

Effective period

source required
  • FY2026 Apr update
  • Source year 2026
  • Updated 2026-04-01
  • HCC Buddy public API
HCC Buddy Insights

HCC Mapping

HCC 182 Spinal Cord Disorders/Injuries (V28)HCC 72 Spinal Cord Disorders/Injuries (V24)HCC 155 Myelitis and Encephalomyelitis (RxHCC)HCC 72 Spinal Cord Disorders/Injuries (ESRD/PACE)HCC 114 HHS-HCC 114; HHS-HCC 2026 benefit year (HHS-HCC)

RAF Value

V28: RAF: 0.478V24: RAF: 0.481RxHCC: RAF: 0.086ESRD/PACE: RAF: 0.099HHS-HCC: RAF: Varies by metal level

Model Period

FY2026 Apr update

Source

source required

Audit Caution

Close codes need documentation support before selection. Do not assume relationships.
Reviewed by the HCC Buddy Coding Team

HCC Buddy workflow band

HCC mapping, RAF, MEAT, source trail, and audit caution stay in view.

MEAT supportaudit cautionsource required

V28

HCC 182

Spinal Cord Disorders/Injuries

RAF: 0.478

V24

HCC 72

Spinal Cord Disorders/Injuries

RAF: 0.481

RxHCC

RxHCC 155

Myelitis and Encephalomyelitis

RAF: 0.086

ESRD/PACE

HCC 72

Spinal Cord Disorders/Injuries

RAF: 0.099

HHS-HCC

HCC 114

HHS-HCC 114; HHS-HCC 2026 benefit year

RAF: Varies by metal level

MEAT checklist

Reviewed by the HCC Buddy Coding Team

Monitor, Evaluate, Assess, or Treat must be supported in the provider note.

HCC Buddy guidance, not official ICD-10-CM text.

Audit caution

Reviewed by the HCC Buddy Coding Team

Close codes need documentation support before selection. Do not assume relationships.

HCC Buddy guidance, not official ICD-10-CM text.

Reviewer sign-off

Reviewed by the HCC Buddy Coding Team

MEAT, documentation support, audit cautions, and close-code guidance are reviewed and approved for this effective period.

HCC Buddy enrichment is separate from official source text.

Last updated: April 1, 2026 · Not a substitute for official coding guidelines. No PHI or patient data.
HCC Buddy Code Card
FY 2026 Apr update
Q02Billable

Microcephaly

CMS-HCC V28

HCC 182

RAF 0.478

CMS-HCC V24

HCC 72

RAF 0.481

RxHCC

RxHCC 155

RAF 0.086

Reviewed by the HCC Buddy Coding TeamFY2026 Apr update

Code

Q02

V28 HCC

HCC 182

RAF

0.478

Compare tray

Add close codes to compare documentation differences.