Pod

Available as Markdown and JSON. Pod is also available over MCP.

Reported issues for medical-codes-mcp-server

Pod holds 14 of 14 GitHub reports that passed its relevance review. This can include external user reports, maintainer-confirmed bugs, and concrete feature gaps. Treat them as evidence to inspect, not a count of distinct defects.

Back to medical-codes-mcp-server.

Most discussed

bug(map_codes): the system-token recovery on rxcui_to_* offers inputs those directions reject

Server version

0.3.0

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.x

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

A code-system name sent as from on an rxcui_to_* direction gets the drug-direction recovery — "from takes a drug name, an NDC, or an RXCUI" — but those directions take an RXCUI only, so following the hint with a drug name or NDC misses again.

Steps to reproduce

  1. medcode_map_codes with `{ "from":…

Read the thread · 2026-09-24 · closed · 1 comment

bug(map_codes): explicit-system miss on parents/children says no bundled code matches a code another system holds

Server version

0.3.0

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.0

Transport

stdio

Description

medcode_map_codes parents / children under an explicit system answers a code another bundled system holds with the generic no_mapping message, No bundled code matches "<from>", which is false, and recovers to medcode_get_code. medcode_check_code (#48) and medcode_get_code (#49) name the holding system in the same case.

Steps…

Read the thread · 2026-09-24 · closed · 1 comment

bug(map_codes): ndc_to_rxcui misses recover to get_code, which refuses the same spelling

Server version

0.2.9

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.x

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

An ndc_to_rxcui miss on medcode_map_codes uses the generic no_mapping wording — No bundled code matches "<value>" — and recovers to medcode_get_code. The value is an NDC, not a code, and medcode_get_code refuses the same malformed spellings, so the recovery sends the caller to a second miss. Once…

Read the thread · 2026-09-24 · closed · 1 comment

bug(get_code): no_codes_found says "any bundled system" when an explicit system limited the lookup

Server version

0.2.9

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.x

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

medcode_get_code with an explicit system looks each code up in that system only, but no_codes_found still reads "None of the N requested code(s) resolved in any bundled system", and the error contract's when says the same. A code another bundled system holds is reported as absent from all of them.

###…

Read the thread · 2026-09-24 · closed · 1 comment

bug(check_code): an explicit RXNORM system gives the CPT hint for codes other systems hold

Server version

0.2.9

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.x

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

medcode_check_code with an explicit system: "RXNORM" words every miss as a possible CPT / HCPCS Level I code (#8's sentence), whatever the value's shape — including codes another bundled system holds. The caller gets a licensing explanation instead of a pointer to the system that actually has the code.

###…

Read the thread · 2026-09-24 · closed · 1 comment

bug(rxnorm): search and name_to_rxcui match the stored term type, not only the drug name

Server version

0.2.9

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.x

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

For RxNorm rows the index's short_desc column stores the term type (IN, SCD, SBD, BN, …), not a description (#42). Two query paths still match against it, so a query equal to or contained in a term type returns every concept of that type whatever its name:

Read the thread · 2026-09-24 · closed · 1 comment

bug(check_code): an NDC is reported as matching no bundled code shape

Server version

0.2.9

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.x

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

medcode_check_code answers an NDC with an unknown_code error saying the value "matches no bundled code shape" and recovers to medcode_search_codes. NDC is a product identifier, not a code system (#10), so check_code rightly has no billability verdict for it — but medcode_get_code decodes the same…

Read the thread · 2026-09-24 · closed · 1 comment

bug(rxnorm): shortDescription carries the term type, not a description

Server version

0.2.9

mcp-ts-core version

^0.13.6

Runtime

Bun

Runtime version

Bun 1.4.x

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

For every RxNorm concept, shortDescription holds the RxNorm term type (SBD, IN, SCD, …) rather than a description. parseRxNav() in scripts/ingest/parsers.ts stores shortDesc: c.tty, and the field is advertised as the official short/abbreviated description, so medcode_get_code renders `Short:…

Read the thread · 2026-09-24 · closed · 1 comment

Most recent

feat(map_codes): name the mistake when from is a code system token, not a code

Use case

Callers put a system token in medcode_map_codes' from — { "from": "ICD10CM", "direction": "children" } — and get the generic no_mapping, whose recovery ("Check the code, or decode it with medcode_get_code first") sends them to decode a string that was never a code.

Related: #38

Proposed behavior

When from resolves nothing and, compared case-insensitively with -, ., and whitespace removed, equals a bundled system's id or display label (ICD10CM / ICD-10-CM,…

Read the thread · 2026-08-21 · closed · 1 comment

feat(map_codes,get_code): name CPT / HCPCS Level I as out of scope on a bare-integer miss

Use case

A CPT / HCPCS Level I code sent to medcode_map_codes or medcode_get_code gets a generic not-found; map_codes' recovery points to get_code, which fails the same way. Only medcode_check_code says these AMA-licensed codes are out of scope (#8).

Related: #8, #39

Proposed behavior

When a bare-integer source (^\d+$, #8's shape) resolves in no bundled system, both tools carry #8's out-of-scope sentence ("If this is a CPT or HCPCS Level I code, those are out of scope —…

Read the thread · 2026-08-21 · closed · 1 comment

bug(rxnorm): billability fields misclassify every RxNorm concept

Server version

0.2.7

mcp-ts-core version

0.11.1

Runtime

Bun

Runtime version

Bun 1.3.14 / Node v26.5.0

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

Every bundled RxNorm concept decodes as billable: false, and medcode_check_code reports a valid RXCUI as valid_not_billable with advice to find a more specific code. The RxNav data RxNorm is built from (rxcui, name, tty) carries no billability signal. parseRxNav() in…

Read the thread · 2026-08-11 · closed · 1 comment

bug(map_codes): direction-incompatible inputs are silently ignored

Server version

0.2.7

mcp-ts-core version

0.11.1

Runtime

Bun

Runtime version

Bun 1.3.14 / Node v26.5.0

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

medcode_map_codes accepts system, limit, and cursor on every direction, but each direction reads only some and silently drops the rest, returning a normal success.

Direction system limit / cursor
parents read dropped
children read read
…

Read the thread · 2026-08-11 · closed · 1 comment

bug(map_codes): malformed NDC separators bypass segment validation

Server version

0.2.7

mcp-ts-core version

0.11.1

Runtime

Bun

Runtime version

Bun 1.3.14 / Node v26.5.0

Transport

HTTP (Streamable HTTP)

OS

macOS 26.1

Description

medcode_map_codes ndc_to_rxcui bypasses the NDC segment-width contract from #23. When ndcCandidates() rejects a value, mapDrug() strips every non-digit and looks up the rest, so any string whose digits spell a bundled NDC resolves to that product. medcode_get_code rejects the same…

Read the thread · 2026-08-11 · closed · 1 comment

feat(map_codes): rxcui_to_classes and class_to_rxcuis directions over bundled RxClass edges

Use case

medcode_map_codes says what a drug is but not what it does — pharmacologic class, mechanism, indications, contraindications, CSA schedule — or which drugs share a class. RxClass publishes those edges keyed on the RXCUIs this index already bundles.

Proposed behavior

New capability: two directions, baked from RxClass at index-build time.

Read the thread · 2026-08-11 · closed · 1 comment

The remaining reports are on the project's issue tracker.