K51.51
Left sided colitis with complications
K51.51 is a non-billable ICD-10-CM code header for left sided colitis with complications. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are K51.511 Left sided colitis with rectal bleeding, K51.512 Left sided colitis with intestinal obstruction, K51.513 Left sided colitis with fistula, K51.514 Left sided colitis with abscess and 2 more. Its coding notes include a Use additional code instruction, 3 Excludes1 entries and 8 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- noninfective inflammatory bowel disease
More specific codes under K51.51 6
- K51.511Left sided colitis with rectal bleedingBillable
- K51.512Left sided colitis with intestinal obstructionBillable
- K51.513Left sided colitis with fistulaBillable
- K51.514Left sided colitis with abscessBillable
- K51.518Left sided colitis with other complicationBillable
- K51.519Left sided colitis with unspecified complicationsBillable