| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| Grade 1: No hemorrhage evident | Grade 1: No hemorrhage evident | Grade 1: No hemorrhage evident | ||
| Grade 2: SAH less than 1 mm thick | Grade 2: SAH less than 1 mm thick | Grade 2: SAH less than 1 mm thick | ||
| Grade 3: SAH more than 1 mm thick | Grade 3: SAH more than 1 mm thick | Grade 3: SAH more than 1 mm thick | ||
| Grade 4: SAH of any thickness with IVH or parenchymal extension | Grade 4: SAH of any thickness with IVH or parenchymal extension | Grade 4: SAH of any thickness with IVH or parenchymal extension |