children
, nametorxcui, and rxcuitondc can return large sets and paginate — a product can carry thousands of package NDCs; pass a response's nextCursor back as cursor (with an optional limit) to walk the full set
How to use it
children is exposed by the Medical Codes MCP Server MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the children tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Medical Codes MCP Server
docker run --rm -e MCP_TRANSPORT_TYPE=stdio medical-codes-mcp-serverOther tools in Medical Codes MCP Server (7)
attaches each code's parent and immediate children
Walk a system's hierarchy for discovery without a search term.
Validate a code's existence, currency, and billability, with a whyNot for non-billable/terminated cases.
Decode 1–50 codes to their official descriptions. Auto-detects the system per code; partial-success found / notFound.
List bundled systems with release identifiers, effective dates, and code counts (provenance).
Crosswalk a code within its hierarchy (parents/children) or a drug across RxNorm (name ↔ RXCUI, NDC ↔ RXCUI, RXCUI → ingredients/brands).
Full-text search over official descriptions — go from a clinical description to the code.