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

Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

See Tabular List: I25.110

I25, Chronic ischemic heart disease

I25.1, Atherosclerotic heart disease of native coronary artery

I25.11, Atherosclerotic heart disease of native coronary artery with angina pectoris

I25.110, Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

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

I25.110

Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

Open the shareable code page for I25.110→
billableHCC mapped

Includes

official source

Not listed for this effective period.

Excludes 1

official source
  • unstable angina without atherosclerotic heart disease (I20.0)

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

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
  • 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

Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

See Tabular List: I25.110

I25, Chronic ischemic heart disease

I25.1, Atherosclerotic heart disease of native coronary artery

I25.11, Atherosclerotic heart disease of native coronary artery with angina pectoris

I25.110, Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

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

I25.110

Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

Open the shareable code page for I25.110→
billableHCC mapped

Includes

official source

Not listed for this effective period.

Excludes 1

official source
  • unstable angina without atherosclerotic heart disease (I20.0)

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

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

HCC Mapping

HCC 229 Unstable Angina and Other Acute Ischemic Heart Disease (V28)HCC 87 Unstable Angina and Other Acute Ischemic Heart Disease (V24)HCC 188 Coronary Artery Disease and Angina (RxHCC)HCC 87 Unstable Angina and Other Acute Ischemic Heart Disease (ESRD/PACE)HCC 132 HHS-HCC 132; HHS-HCC 2026 benefit year (HHS-HCC)

RAF Value

V28: RAF: 0.240V24: RAF: 0.195RxHCC: RAF: 0.052ESRD/PACE: RAF: 0.120HHS-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 229

Unstable Angina and Other Acute Ischemic Heart Disease

RAF: 0.240

V24

HCC 87

Unstable Angina and Other Acute Ischemic Heart Disease

RAF: 0.195

RxHCC

RxHCC 188

Coronary Artery Disease and Angina

RAF: 0.052

ESRD/PACE

HCC 87

Unstable Angina and Other Acute Ischemic Heart Disease

RAF: 0.120

HHS-HCC

HCC 132

HHS-HCC 132; 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
I25.110Billable

Atherosclerotic heart disease of native coronary artery with unstable angina pectoris

CMS-HCC V28

HCC 229

RAF 0.240

CMS-HCC V24

HCC 87

RAF 0.195

RxHCC

RxHCC 188

RAF 0.052

Reviewed by the HCC Buddy Coding TeamFY2026 Apr update

Code

I25.110

V28 HCC

HCC 229

RAF

0.240

Compare tray

Add close codes to compare documentation differences.