| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 1136 | 3 | NAACCR/SEER | 2025 | 25 |
Pediatric Primary Tumor is part of the Pediatric Staging data collection system and is used to classify contiguous growth (extension) of the primary tumor within the organ of origin or its direct extension into neighboring organs. See also Pediatric Regional Nodes [1137], and Pediatric Mets [1138]. Effective for cases diagnosed 1/1/2024 and forward.
Pediatric Primary Tumor is used to calculate Derived Pediatric T [1142] (when applicable). Derivation will occur at the level of the central registry.
| 000 | In situ, intraepithelial, noninvasive, non-infiltrating |
| 800 | No evidence of primary tumor |
| 888 | Not applicable |
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record Death Certificate Only |
Schema-specific codes where needed.