Diagnosis Categories

AAPC's diagnosis taxonomy, which ladders ICD-10-CM codes up into a browsable hierarchy of categories. AggKnowledge republishes it unmodified and assigns each category a stable AggKnowledge category ID. Expand any category to see its children, or search the full set by name. Served live from the taxonomy API.

Browse the hierarchy below (expanding a category loads its child categories), or search to query the entire set.

Authority
AAPC · aapc.com/business/standard-code-sets
Version
2026
Values
23,539 categories
Endpoint
GET /v3/{environment}/healthcare/taxonomies/diagnosis

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