. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: J Pediatr. 2021 Mar 6;234:172–180.e3. doi: 10.1016/j.jpeds.2021.03.001

Table 1.

Classification of leukemia morphology codes.

Subtype	Morphology codes
Acute lymphoid leukemias	9727–9729, 9811, 9813–9818, 9820, 9821, 9826, 9827, 9832–9837, 9848
Acute myeloid leukemias	9742, 9840, 9860, 9861, 9865–9867, 9869, 9871–9874, 9891, 9895–9897, 9911, 9920, 9930
Megakaryoblastic leukemia (AML-M7)	9898, 9910
Chronic myeloproliferative disorders and leukemias	9803, 9831, 9863, 9868, 9875, 9876, 9940, 9945, 9946, 9950, 9960–9966
Myelodysplastic syndrome and other myeloproliferative disorders	9975, 9980, 9982–9987, 9989, 9991, 9992
Unspecified and other specified leukemias	9733, 9751, 9800, 9801, 9805–9809, 9864, 9931

Morphology codes obtained from Surveillance, Epidemiology, and End Results Program(29)