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PROTECT-CHILD Pediatric Transplant Data Implementation Guide
0.1.0-ci-build -

PROTECT-CHILD Pediatric Transplant Data Implementation Guide
0.1.0-ci-build - ci-build

PROTECT-CHILD Pediatric Transplant Data Implementation Guide, published by Protect Child. This guide is not an authorized publication; it is the continuous build for version 0.1.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/protect-child/ and changes regularly. See the Directory of published versions

CodeSystem: Banff C4d Score CodeSystem (Experimental)

Official URL: https://hl7.eu/fhir/ig/hl7.eu.fhir.protect-child/CodeSystem/banff-c4d-score-cs Version: 0.1.0-ci-build
Draft as of 2026-09-28 Computable Name: BanffC4dScoreCS

Banff C4d score: the extent of C4d staining in peritubular capillaries (kidney) or the portal microvasculature (liver). The DMv1.2 boolean ihc_if_c4d maps to c4d-0 (false) or c4d-1..c4d-3 (true).

This Code system is referenced in the content logical definition of the following value sets:

This case-sensitive code system https://hl7.eu/fhir/ig/hl7.eu.fhir.protect-child/CodeSystem/banff-c4d-score-cs defines the following codes:

CodeDisplayDefinition
c4d-0 C4d0 – negative (0%) No C4d staining (Banff C4d0, negative): 0% of peritubular capillaries (kidney) or portal tracts (liver).
c4d-1 C4d1 – minimal (<10%) Minimal C4d staining (Banff C4d1): under 10% of peritubular capillaries (kidney) or portal tracts (liver).
c4d-2 C4d2 – focal (10–50%) Focal C4d staining (Banff C4d2): 10–50% of peritubular capillaries (kidney) or portal tracts (liver).
c4d-3 C4d3 – diffuse (>50%) Diffuse C4d staining (Banff C4d3): over 50% of peritubular capillaries (kidney) or portal tracts (liver).