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Cardiology ICD-10 Cheat Sheet
54 most-used billable ICD-10-CM diagnosis codes (of 116 common cardiology codes)
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- E78.1Pure hyperglyceridemia
- E78.2Mixed hyperlipidemia
- E78.3Hyperchylomicronemia
- E78.5Hyperlipidemia, unspecified
- E78.6Lipoprotein deficiency
- F45.8Other somatoform disorders
- I10Essential (primary) hypertension
- I20.0Unstable angina
- I20.1Angina pectoris with documented spasm
- I20.9Angina pectoris, unspecified
- I21.19ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall
- I22.1Subsequent ST elevation (STEMI) myocardial infarction of inferior wall
- I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
- I25.2Old myocardial infarction
- I25.89Other forms of chronic ischemic heart disease
- I25.9Chronic ischemic heart disease, unspecified
- I27.0Primary pulmonary hypertension
- I27.89Other specified pulmonary heart diseases
- I27.9Pulmonary heart disease, unspecified
- I34.0Nonrheumatic mitral (valve) insufficiency
- I34.1Nonrheumatic mitral (valve) prolapse
- I34.2Nonrheumatic mitral (valve) stenosis
- I34.9Nonrheumatic mitral valve disorder, unspecified
- I35.0Nonrheumatic aortic (valve) stenosis
- I35.1Nonrheumatic aortic (valve) insufficiency
- I35.2Nonrheumatic aortic (valve) stenosis with insufficiency
- I35.8Other nonrheumatic aortic valve disorders
- I35.9Nonrheumatic aortic valve disorder, unspecified
- I36.0Nonrheumatic tricuspid (valve) stenosis
- I36.1Nonrheumatic tricuspid (valve) insufficiency
- I36.2Nonrheumatic tricuspid (valve) stenosis with insufficiency
- R00.0Tachycardia, unspecified
- R00.2Palpitations
- R01.1Cardiac murmur, unspecified
- R06.02Shortness of breath
- R06.89Other abnormalities of breathing
- R07.1Chest pain on breathing
- R07.2Precordial pain
- R07.81Pleurodynia
- R07.82Intercostal pain
- R07.89Other chest pain
- R07.9Chest pain, unspecified
- R42Dizziness and giddiness
- R53.1Weakness
- R53.81Other malaise
- R53.83Other fatigue
- R55Syncope and collapse
- R60.0Localized edema
- R60.1Generalized edema
- R60.9Edema, unspecified
- R94.30Abnormal result of cardiovascular function study, unspecified
- R94.31Abnormal electrocardiogram [ECG] [EKG]
- R94.39Abnormal result of other cardiovascular function study
- Z01.810Encounter for preprocedural cardiovascular examination
Excludes1 traps — never code together
- R55✗ neurocirculatory asthenia (F45.8)
- E78.2✗ cerebrotendinous cholesterosis [van Bogaert-Scherer- Epstein] (E75.5)
- F45.8✗ sleep related teeth grinding (G47.63)
- I10✗ hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
- I27.0✗ persistent pulmonary hypertension of newborn (P29.30)
- I34.1✗ Marfan's syndrome (Q87.4-)
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Need the full list? All 116 common cardiology codes · Check a claim in the ICD-10 validator
Codes reflect the FY2026 ICD-10-CM code set. Always verify against current coding guidelines before billing.