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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: Graft Pathology Codes (Experimental)

Official URL: https://hl7.eu/fhir/ig/hl7.eu.fhir.protect-child/CodeSystem/graft-pathology-cs Version: 0.1.0-ci-build
Draft as of 2026-09-28 Computable Name: GraftPathologyCS

Local observation and component codes for graft biopsy scoring: the Banff diagnostic category, the Banff lesion scores, and the liver Banff Rejection Activity Index with its three constituent scores. Neither LOINC nor SNOMED CT carries these.

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/graft-pathology-cs defines the following codes:

CodeDisplayDefinition
banff-category Banff diagnostic category Banff 2022 diagnostic category assigned on a kidney allograft biopsy.
liver-rai Banff Rejection Activity Index (liver) Total Banff Rejection Activity Index (RAI) for liver allograft rejection, 0–9.
banff-g g – glomerulitis Banff lesion score for glomerulitis, graded 0–3.
banff-ptc ptc – peritubular capillaritis Banff lesion score for peritubular capillaritis, graded 0–3.
banff-i i – interstitial inflammation Banff lesion score for interstitial inflammation, graded 0–3.
banff-t t – tubulitis Banff lesion score for tubulitis, graded 0–3.
banff-v v – intimal arteritis Banff lesion score for intimal arteritis, graded 0–3.
banff-ci ci – interstitial fibrosis Banff lesion score for interstitial fibrosis, graded 0–3.
banff-ct ct – tubular atrophy Banff lesion score for tubular atrophy, graded 0–3.
banff-cg cg – transplant glomerulopathy Glomerular basement membrane double contours. Banff scores cg1 as cg1a/cg1b; both are recorded here as 1.
banff-ah ah – arteriolar hyalinosis Banff lesion score for arteriolar hyalinosis, graded 0–3.
banff-mm mm – mesangial matrix expansion Banff lesion score for mesangial matrix expansion, graded 0–3.
rai-portal-inflammation Portal inflammation Rejection activity index component for portal inflammation, graded 0–3.
rai-bile-duct-inflammation Bile duct inflammation / damage Rejection activity index component for bile duct inflammation / damage, graded 0–3.
rai-venous-endothelial-inflammation Venous endothelial inflammation Rejection activity index component for venous endothelial inflammation, graded 0–3.