I35.8 is the authoritative medical code for Other nonrheumatic aortic valve disorders. This classification is used in medical billing and clinical recording to specify the clinical criteria for other nonrheumatic aortic valve disorders (ICD-10-CM I35.8), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Other nonrheumatic aortic valve disorders is a billable ICD-10-CM diagnosis code I35.8. Excludes2 (not included here): aortic valve disorder of unspecified cause but with diseases of mitral and/or tricuspid valve(s) I08.-; aortic valve disorder specified as congenital (Q23.0, Q23.1); aortic valve disorder specified as rheumatic I06.-; hypertrophic subaortic stenosis I42.1. Code also: , if applicable, bicuspid aortic valve Q23.81.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I35.8 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- aortic valve disorder of unspecified cause but with diseases of mitral and/or tricuspid valve(s) I08.-
- aortic valve disorder specified as congenital (Q23.0, Q23.1)
- aortic valve disorder specified as rheumatic I06.-
- hypertrophic subaortic stenosis I42.1
Code Also
Additional codes that may be required to fully describe the encounter.
- , if applicable, bicuspid aortic valve Q23.81
Frequently Asked Questions (FAQ) & Clinical Guidance
Can I35.8 be reported alongside related conditions?
Per Excludes2 instructions, I35.8 and the following may both be reported when both are present: aortic valve disorder of unspecified cause but with diseases of mitral and/or tricuspid valve(s) (I08.-); aortic valve disorder specified as congenital (Q23.0, Q23.1); aortic valve disorder specified as rheumatic (I06.-); hypertrophic subaortic stenosis (I42.1).
Codes in This Family (5)
Official ICD-10-CM classifications in the same code family as I35.8, with their registry titles.
- I35 — Nonrheumatic aortic valve disorders
- I35.0 — Nonrheumatic aortic (valve) stenosis
- I35.1 — Nonrheumatic aortic (valve) insufficiency
- I35.2 — Nonrheumatic aortic (valve) stenosis with insufficiency
- I35.9 — Nonrheumatic aortic valve disorder, unspecified
Indexed Clinical Terms (9)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular), aorta, aortic (nonsyphilitic), valve (heart)
- Atheroma, atheromatous, aorta, aortic, valve
- Deformity, aortic, cusp or valve (congenital), acquired
- Ectasia, ectasis, annuloaortic
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular), aortic (heart) (nonrheumatic) (valve)
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular), aortic (heart) (nonrheumatic) (valve), arteriosclerotic
- Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular), aortic (heart) (nonrheumatic) (valve), specified cause NEC
- Failure, failed, aortic (valve)
- Rupture, ruptured, aorta, aortic, valve or cusp
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: