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HCC Buddy
HCC Buddy
Alphabetic Index and Tabular path
source requiredSource load source requiredSource year source requiredUpdated source required

Index trail

O09.00 description source required for selected-code loading state.

See Tabular List: O09.00

Chapter source required for selected-code loading state.

Section source required for selected-code loading state.

Parent code source required for selected-code loading state.

O09.00, O09.00 description source required for selected-code loading state.

Selected code, source checked for the selected effective period

Commonly confused codes

source required
  • Source required for related-code comparison.
Code details and official notes

O09.00

O09.00 description source required for selected-code loading state.

Open the shareable code page for O09.00→
nonbillable

Includes

source required
  • Source required for fallback official note.

Excludes 1

official source

No Excludes 1 note is listed in this source payload.

Excludes 2

source required
  • Source required for fallback official note.

Code First

official source

Not listed for this effective period.

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
  • Effective period source required for selected-code loading state.
HCC Buddy
HCC Buddy
Alphabetic Index and Tabular path
source requiredSource load source requiredSource year source requiredUpdated source required

Index trail

O09.00 description source required for selected-code loading state.

See Tabular List: O09.00

Chapter source required for selected-code loading state.

Section source required for selected-code loading state.

Parent code source required for selected-code loading state.

O09.00, O09.00 description source required for selected-code loading state.

Selected code, source checked for the selected effective period

Commonly confused codes

source required
  • Source required for related-code comparison.
Code details and official notes

O09.00

O09.00 description source required for selected-code loading state.

Open the shareable code page for O09.00→
nonbillable

Includes

source required
  • Source required for fallback official note.

Excludes 1

official source

No Excludes 1 note is listed in this source payload.

Excludes 2

source required
  • Source required for fallback official note.

Code First

official source

Not listed for this effective period.

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
  • Effective period source required for selected-code loading state.
HCC Buddy Insights

HCC Mapping

V28 source requiredV24 source requiredRxHCC source requiredESRD/PACE source requiredHHS-HCC source required for selected effective period (HHS-HCC)

RAF Value

V28 RAF source requiredV24 RAF source requiredRxHCC RAF source requiredESRD/PACE RAF source requiredHHS-HCC RAF source required

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

HHS-HCC

source required

HHS-HCC source required for selected effective period

RAF: source required

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
O09.00Non-billable

O09.00 description source required for selected-code loading state.

ACA/HHS

Source required

RAF source required

Reviewed by the HCC Buddy Coding TeamFY2026 Apr update

Code

O09.00

V28 HCC

source required

RAF

source required

Compare tray

Add close codes to compare documentation differences.