ICD-10-CM diagnosis codes, FY2027
ICD-10-CM is the diagnosis code set used by every HIPAA-covered provider in the United States. The FY2027 set is effective for encounters from October 1, 2026 through September 30, 2027 and contains 74,879 billable codes. A billable code is the most specific code available for a diagnosis - codes shown in the tabular list as category headers must be coded further and cannot be billed on their own.
Pick a chapter, then a category, or search ICD-10-CM directly.
A00-B99 - 167 categories, 1,068 billable codes
C00-D49 - 141 categories, 1,730 billable codes
D50-D89 - 35 categories, 324 billable codes
E00-E89 - 73 categories, 973 billable codes
F01-F99 - 72 categories, 872 billable codes
G00-G99 - 68 categories, 700 billable codes
H00-H59 - 40 categories, 2,677 billable codes
H60-H95 - 24 categories, 653 billable codes
I00-I99 - 80 categories, 1,433 billable codes
J00-J99 - 65 categories, 366 billable codes
K00-K95 - 73 categories, 863 billable codes
L00-L99 - 74 categories, 1,001 billable codes
M00-M99 - 79 categories, 6,687 billable codes
N00-N99 - 85 categories, 838 billable codes
O00-O9A - 72 categories, 2,481 billable codes
P00-P96 - 59 categories, 463 billable codes
Q00-Q99 - 89 categories, 900 billable codes
R00-R99 - 89 categories, 774 billable codes
S00-T88 - 0 categories, 0 billable codes
V00-Y99 - 444 categories, 48,648 billable codes
Z00-Z99 - 90 categories, 1,425 billable codes
U00-U85 - 2 categories, 3 billable codes