FY2027 ICD-10-CM reference
I20: Angina pectoris
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Angina pectoris. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- I20.0: Unstable anginaBillable code
- I20.1: Angina pectoris with documented spasmBillable code
- I20.2: Refractory angina pectorisBillable code
- I20.8: Other forms of angina pectorisNonbillable heading
- I20.9: Angina pectoris, unspecifiedBillable code
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Excludes2
certain conditions originating in the perinatal period (P04-P96)
Source: I00-I99 (chapter, inherited).
Excludes2
certain infectious and parasitic diseases (A00-B99)
Source: I00-I99 (chapter, inherited).
Excludes2
complications of pregnancy, childbirth and the puerperium (O00-O9A)
Source: I00-I99 (chapter, inherited).
Excludes2
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
Source: I00-I99 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: I00-I99 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: I00-I99 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: I00-I99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: I00-I99 (chapter, inherited).
Excludes2
systemic connective tissue disorders (M30-M36)
Source: I00-I99 (chapter, inherited).
Excludes2
transient cerebral ischemic attacks and related syndromes (G45.-)
Source: I00-I99 (chapter, inherited).
Code also
the presence of hypertension (I10-I1A)
Source: I20-I25 (section, inherited).
Instructional note
code to identify:
Source: I20 (category, direct).
Instructional note
exposure to environmental tobacco smoke (Z77.22)
Source: I20 (category, direct).
Instructional note
history of tobacco dependence (Z87.891)
Source: I20 (category, direct).
Instructional note
occupational exposure to environmental tobacco smoke (Z57.31)
Source: I20 (category, direct).
Instructional note
tobacco dependence (F17.-)
Source: I20 (category, direct).
Instructional note
tobacco use (Z72.0)
Source: I20 (category, direct).
Excludes1
angina pectoris with atherosclerotic heart disease of native coronary arteries (I25.1-)
Source: I20 (category, direct).
Excludes1
atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris (I25.7-)
Source: I20 (category, direct).
Excludes1
postinfarction angina (I23.7)
Source: I20 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does I20 mean in FY2027?
The official ICD-10-CM descriptor is Angina pectoris. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is I20 billable in FY2027?
The FY2027 order file marks I20 as a nonbillable heading. Select a complete billable child code.
Does I20 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition