The type of CODED CLINICAL ENTRY used for the PATIENT DIAGNOSIS.
National Codes:
| 01 | Accident & Emergency Diagnosis *** | 
| 02 | ICD-10 | 
| 03 | Read Code 4Byte Version (retired 1 October 2009) | 
| 04 | Read Coded Clinical Terms Version 2 | 
| 05 | Read Coded Clinical Terms Version 3 (CTV3) * | 
| 06 | Systematized Nomenclature of Medicine Clinical Terms (SNOMED CT) ** | 
Notes:
- * Read Coded Clinical Terms Version 3 (CTV3) with qualifiers (previously known as 3.1) is not supported in the Commissioning Data Sets
- ** Systematized Nomenclature of Medicine Clinical Terms (SNOMED CT) is not valid for Commissioning Data Set version 6-2
- *** Accident & Emergency Diagnosis is not valid for the Children and Young People's Health Services Data Set and Community Information Data Set.
This attribute is also known by these names:
| Context | Alias | 
|---|---|
| plural | DIAGNOSIS SCHEMES IN USE | 
