Field types

OHM Studio supports 16 field types. Medical primitives (vitals, diagnoses, medications, allergies, …) are first-class — no JSON-Schema gymnastics, no string-typed fields pretending to be lists.

Basic

Clinical primitives

These are what OHM is for — every primitive has been tuned with hundreds of consultations.

vitals-block

{
  bp?:    { systolic?: number; diastolic?: number };
  hr?:    number;          // /min
  rr?:    number;          // /min
  temp?:  number;          // °C
  spo2?:  number;          // %
  weight?: number;         // kg
  height?: number;         // cm
}

The Foundation Block enforces vital sanity ranges. Out-of-range values are dropped, not coerced.

diagnosis-list

Array<{
  name: string;
  code?: string;
  system?: "icd10" | "snomed" | "icd11";
  status?: "active" | "provisional" | "differential" | "ruled-out";
}>

Negation handling is built in: "no fever" / "denies chest pain" never shows up as a diagnosis. Uncertainty markers ("probably", "rule out") get status: "provisional".

medication-list

Array<{
  name: string;
  dosage?: string;
  frequency?: string;     // OD/BD/TDS/QID/HS/SOS/PRN
  route?: string;         // Oral/IV/IM/SC/Topical/Inhaled
  duration?: string;
  instructions?: string;
}>

allergy-list, investigation-list, referral-list, procedure-list

Similar structured shapes. See API reference for full schemas.

Field configuration

Every field carries:

• key — the JSON output property
• label — human-readable, shown in the Builder and (optionally) in your UI
• description — surfaced to the LLM as part of the schema description
• required — true, "completion-only", or omit for optional
• mentions — for rich-text, which @-pickers (dx, rx, lab, dr) are allowed
• options — for choice / multi-choice / code-list