Note: Illustration not yet up to date.
| Classification | Description | Notes | |
| Grade 1 | – Subcapsular hematoma <10% surface area
– Parenchymal laceration <1 cm depth – Capsular tear |
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| Grade 2 | –Hematoma: Subcapsular, 10-50% surface area
– Subcapsular hematoma 10–50% surface area; intraparenchymal hematoma <5 cm – Parenchymal laceration 1–3 cm |
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| Grade 3 |
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| Grade 4 | – Any injury in the presence of a splenic vascular injury or active bleeding confined within splenic capsule
– Parenchymal laceration involving segmental or hilar vessels producing >25% devascularization |
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| Grade 5 | – Any injury in the presence of splenic vascular injury with active bleeding extending beyond the spleen into the peritoneum |
Note: Advance one grade for multiple splenic injuries up to grade 3.
Reference:
Kozar RA et al. (2018). Organ injury scaling 2018 update: Spleen, liver, and kidney. J Trauma Acute Care Surg; 85(6):1119- 1122