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  "Slug": "medical-codes-mcp-server",
  "Name": "medical-codes-mcp-server",
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  "IssueTotal": 14,
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  "Issues": [
    {
      "Title": "bug(map_codes): the system-token recovery on rxcui_to_* offers inputs those directions reject",
      "Excerpt": "### Server version\n\n0.3.0\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\nA 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.\n\n### Steps to reproduce\n\n1. `medcode_map_codes` with `{ \"from\":…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/56",
      "PublishedAt": "2026-09-24T20:03:56.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(map_codes): explicit-system miss on parents/children says no bundled code matches a code another system holds",
      "Excerpt": "### Server version\n\n0.3.0\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.0\n\n### Transport\n\nstdio\n\n### Description\n\n`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.\n\n### Steps…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/52",
      "PublishedAt": "2026-09-24T17:48:24.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(map_codes): ndc_to_rxcui misses recover to get_code, which refuses the same spelling",
      "Excerpt": "### Server version\n\n0.2.9\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\nAn `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…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/50",
      "PublishedAt": "2026-09-24T17:30:29.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(get_code): no_codes_found says \"any bundled system\" when an explicit system limited the lookup",
      "Excerpt": "### Server version\n\n0.2.9\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\n`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.\n\n###…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/49",
      "PublishedAt": "2026-09-24T17:30:26.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(check_code): an explicit RXNORM system gives the CPT hint for codes other systems hold",
      "Excerpt": "### Server version\n\n0.2.9\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\n`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.\n\n###…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/48",
      "PublishedAt": "2026-09-24T17:04:32.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(rxnorm): search and name_to_rxcui match the stored term type, not only the drug name",
      "Excerpt": "### Server version\n\n0.2.9\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\nFor 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:\n\n- `searchFts()` indexes `short_desc` in…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/45",
      "PublishedAt": "2026-09-24T16:27:37.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(check_code): an NDC is reported as matching no bundled code shape",
      "Excerpt": "### Server version\n\n0.2.9\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\n`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…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/43",
      "PublishedAt": "2026-09-24T16:05:21.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(rxnorm): shortDescription carries the term type, not a description",
      "Excerpt": "### Server version\n\n0.2.9\n\n### mcp-ts-core version\n\n^0.13.6\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.4.x\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\nFor 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:_…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/42",
      "PublishedAt": "2026-09-24T16:05:19.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "top",
      "Extractor": "github_issue"
    },
    {
      "Title": "feat(map_codes): name the mistake when `from` is a code system token, not a code",
      "Excerpt": "### Use case\n\nCallers 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.\n\nRelated: #38\n\n### Proposed behavior\n\nWhen `from` resolves nothing and, compared case-insensitively with `-`, `.`, and whitespace removed, equals a bundled system's id or display label (`ICD10CM` / `ICD-10-CM`,…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/39",
      "PublishedAt": "2026-08-21T07:11:39.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "feat(map_codes,get_code): name CPT / HCPCS Level I as out of scope on a bare-integer miss",
      "Excerpt": "### Use case\n\nA 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).\n\nRelated: #8, #39\n\n### Proposed behavior\n\nWhen 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 —…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/38",
      "PublishedAt": "2026-08-21T06:48:54.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(rxnorm): billability fields misclassify every RxNorm concept",
      "Excerpt": "### Server version\n\n0.2.7\n\n### mcp-ts-core version\n\n0.11.1\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14 / Node v26.5.0\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\nEvery 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…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/37",
      "PublishedAt": "2026-08-11T14:41:47.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(map_codes): direction-incompatible inputs are silently ignored",
      "Excerpt": "### Server version\n\n0.2.7\n\n### mcp-ts-core version\n\n0.11.1\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14 / Node v26.5.0\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\n`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.\n\n| Direction | `system` | `limit` / `cursor` |\n|:--|:--|:--|\n| `parents` | read | dropped |\n| `children` | read | read |\n|…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/36",
      "PublishedAt": "2026-08-11T14:41:27.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "bug(map_codes): malformed NDC separators bypass segment validation",
      "Excerpt": "### Server version\n\n0.2.7\n\n### mcp-ts-core version\n\n0.11.1\n\n### Runtime\n\nBun\n\n### Runtime version\n\nBun 1.3.14 / Node v26.5.0\n\n### Transport\n\nHTTP (Streamable HTTP)\n\n### OS\n\nmacOS 26.1\n\n### Description\n\n`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…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/35",
      "PublishedAt": "2026-08-11T14:41:15.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    },
    {
      "Title": "feat(map_codes): rxcui_to_classes and class_to_rxcuis directions over bundled RxClass edges",
      "Excerpt": "### Use case\n\n`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](https://lhncbc.nlm.nih.gov/RxNav/APIs/RxClassAPIs.html) publishes those edges keyed on the RXCUIs this index already bundles.\n\n### Proposed behavior\n\nNew capability: two directions, baked from RxClass at index-build time.\n\n- `rxcui_to_classes` — an RXCUI to its classes. RxClass attaches most…",
      "SourceUrl": "https://github.com/cyanheads/medical-codes-mcp-server/issues/34",
      "PublishedAt": "2026-08-11T03:27:36.000Z",
      "State": "closed",
      "Comments": 1,
      "Reporter": "Maintainer",
      "Rank": "recent",
      "Extractor": "github_issue"
    }
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