ICD-10 Code for Angina
Also indexed as (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)
The ICD-10-CM code for angina is I20.9 — Angina pectoris, unspecified. This is the code the Alphabetic Index gives for angina with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
I20.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which angina code should you use?
The Alphabetic Index lists 17 codes under Angina. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| abdominal | K55.1 | Chronic vascular disorders of intestine | |
| aphthous | B08.5 | Enteroviral vesicular pharyngitis | |
| croupous | J05.0 | Acute obstructive laryngitis [croup] | |
| cruris | I73.9 | Peripheral vascular disease, unspecified | |
| diphtheritic, membranous | A36.0 | Pharyngeal diphtheria | |
| equivalent | I20.89 | Other forms of angina pectoris | |
| exudative, chronic | J37.0 | Chronic laryngitis | |
| following acute myocardial infarction | I23.7 | Postinfarction angina | |
| gangrenous diphtheritic | A36.0 | Pharyngeal diphtheria | |
| intestinal | K55.1 | Chronic vascular disorders of intestine | |
| Ludovici | K12.2 | Cellulitis and abscess of mouth | |
| Ludwig's | K12.2 | Cellulitis and abscess of mouth | |
| malignant diphtheritic | A36.0 | Pharyngeal diphtheria | |
| membranous | J05.0 | Acute obstructive laryngitis [croup] | |
| mesenteric | K55.1 | Chronic vascular disorders of intestine | |
| phlegmonous | J36 | Peritonsillar abscess | |
| post-infarctional | I23.7 | Postinfarction angina | |
| pseudomembranous | A69.1 | Other Vincent's infections | |
| pultaceous, diphtheritic | A36.0 | Pharyngeal diphtheria | |
| refractory | I20.2 | Refractory angina pectoris | |
| specified NEC | I20.89 | Other forms of angina pectoris | |
| stable | I20.89 | Other forms of angina pectoris | |
| stridulous, diphtheritic | A36.2 | Laryngeal diphtheria | |
| tonsil | J36 | Peritonsillar abscess | |
| trachealis | J05.0 | Acute obstructive laryngitis [croup] | |
| unstable | I20.0 | Unstable angina | |
| Vincent's | A69.1 | Other Vincent's infections |
Angina with
Angina phlegmonous
| diphtheritic | A36.0 | Pharyngeal diphtheria |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources