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Cardiothoracic & Vascular ICD-10 Cheat Sheet
59 most-used billable ICD-10-CM diagnosis codes (of 318 common cardiothoracic & vascular codes)
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- C34.00Malignant neoplasm of unspecified main bronchus
- C34.01Malignant neoplasm of right main bronchus
- C34.02Malignant neoplasm of left main bronchus
- C34.10Malignant neoplasm of upper lobe, unspecified bronchus or lung
- C34.11Malignant neoplasm of upper lobe, right bronchus or lung
- E11.59Type 2 diabetes mellitus with other circulatory complications
- G45.9Transient cerebral ischemic attack, unspecified
- I05.0Rheumatic mitral stenosis
- I05.1Rheumatic mitral insufficiency
- I05.2Rheumatic mitral stenosis with insufficiency
- I05.8Other rheumatic mitral valve diseases
- I05.9Rheumatic mitral valve disease, unspecified
- I10Essential (primary) hypertension
- I15.0Renovascular hypertension
- I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
- I35.0Nonrheumatic aortic (valve) stenosis
- I35.1Nonrheumatic aortic (valve) insufficiency
- I35.2Nonrheumatic aortic (valve) stenosis with insufficiency
- I35.8Other nonrheumatic aortic valve disorders
- I63.131Cerebral infarction due to embolism of right carotid artery
- I63.132Cerebral infarction due to embolism of left carotid artery
- I63.139Cerebral infarction due to embolism of unspecified carotid artery
- I63.231Cerebral infarction due to unspecified occlusion or stenosis of right carotid arteries
- I63.232Cerebral infarction due to unspecified occlusion or stenosis of left carotid arteries
- I70.0Atherosclerosis of aorta
- I70.1Atherosclerosis of renal artery
- I70.201Unspecified atherosclerosis of native arteries of extremities, right leg
- I70.202Unspecified atherosclerosis of native arteries of extremities, left leg
- I70.203Unspecified atherosclerosis of native arteries of extremities, bilateral legs
- I80.201Phlebitis and thrombophlebitis of unspecified deep vessels of right lower extremity
- I80.202Phlebitis and thrombophlebitis of unspecified deep vessels of left lower extremity
- I80.203Phlebitis and thrombophlebitis of unspecified deep vessels of lower extremities, bilateral
- I80.209Phlebitis and thrombophlebitis of unspecified deep vessels of unspecified lower extremity
- I80.211Phlebitis and thrombophlebitis of right iliac vein
- K55.1Chronic vascular disorders of intestine
- K55.8Other vascular disorders of intestine
- K55.9Vascular disorder of intestine, unspecified
- L03.031Cellulitis of right toe
- L03.032Cellulitis of left toe
- L03.039Cellulitis of unspecified toe
- L03.041Acute lymphangitis of right toe
- L97.201Non-pressure chronic ulcer of unspecified calf limited to breakdown of skin
- L97.202Non-pressure chronic ulcer of unspecified calf with fat layer exposed
- L97.203Non-pressure chronic ulcer of unspecified calf with necrosis of muscle
- L97.204Non-pressure chronic ulcer of unspecified calf with necrosis of bone
- M79.601Pain in right arm
- M79.602Pain in left arm
- M79.603Pain in arm, unspecified
- M79.604Pain in right leg
- N18.1Chronic kidney disease, stage 1
- N18.2Chronic kidney disease, stage 2 (mild)
- N18.4Chronic kidney disease, stage 4 (severe)
- N28.9Disorder of kidney and ureter, unspecified
- R09.89Other specified symptoms and signs involving the circulatory and respiratory systems
- T81.89XAOther complications of procedures, not elsewhere classified, initial encounter
- T81.89XDOther complications of procedures, not elsewhere classified, subsequent encounter
- T81.89XSOther complications of procedures, not elsewhere classified, sequela
- T82.390AOther mechanical complication of aortic (bifurcation) graft (replacement), initial encounter
- Z09Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
Excludes1 traps — never code together
- I05.1✗ mitral insufficiency not specified as rheumatic (I34.0)
- I10✗ hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
- N28.9✗ chronic renal insufficiency (N18.9)
- Z09✗ aftercare following medical care (Z43-Z49, Z51)
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Need the full list? All 318 common cardiothoracic & vascular 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.