Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
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ReferenceHealth

LanguageValues and typesStandard typesHealth

Icd10Code

On this page

A diagnosis's ICD-10 code, with its dot: I21.9.

Use it to record a diagnosis in a form health systems share. For clinical concepts beyond diagnoses, use SnomedConcept.

Shape

One value, held as text in one set form, with no parts: S52.521A.

Example

example
Icd10Code("I21.9")

Icd10Code(raw) checks the text, and text that isn't one breaks the format rule.

text.parse(raw, as: Icd10Code) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as I219, i21.9 or 121.9.

Good to know

  • Write it in capitals with its dot. I219 is refused.
  • == tells you whether two are the same. < and list.sort_by don't take it.
  • A field that holds one counts as personal data (health), so you don't mark it yourself.

In JSON

A string, in a request, a response or json.write:

json
"I21.9""J45""S52.521A"

Details

Text form, storage, how it is shown, and operations

Icd10Code is in the group Health, and has been in Jadpo since 0.1.0.

Text form

text.from writes one standard text form, the same form text.parse reads back: I21.9, J45 and S52.521A.

How it is stored

It is stored in one column named for the field, of type text. J45 is stored as 'J45'.

How it is shown to people

text.format(value, locale:) shows it to people in their locale.

With locale: Locale.en_gb:

Value Shown
I21.9 I21.9
J45 J45
S52.521A S52.521A

Operations

It also takes text.parse, text.from, text.format, json.read, json.write and ==. How every standard type behaves says how they work.

Markdown for agents: /docs/types/type-icd10-code.md.Built from Jadpo main at aee2e8f.