obscyro

Standards / Snomed

SNOMED CT

How Obscyro models the SNOMED CT International Edition.

Edition

Obscyro currently serves the SNOMED CT International Edition, February 2026 release. Updates ship within two weeks of each official release.

Identifiers

Concept identifiers (SCTIDs) are 64-bit integers; Obscyro returns them as strings to avoid JavaScript precision loss for very large IDs.

Description types

  • FSN — Fully Specified Name (type_id 900000000000003001).
  • Synonym — preferred or acceptable display term (type_id 900000000000013009).
  • Text definition — long-form natural-language description (type_id 900000000000550004).

The preferred term resolution rule is shortest active synonym, falling back to FSN. We do not currently consume the SNOMED Language Reference Set; this is on the roadmap.

Coming soon

More on relationships, refsets, and the recursive is-a graph is being written.