K38.9
Disease of appendix, unspecified
BillableComplete code, valid to report
K38.9 (also written K389) is a billable ICD-10-CM diagnosis code for disease of appendix, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category K38 (Other diseases of appendix). The Alphabetic Index lists it under 1 entry. Its coding notes include 8 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
Inherited from Chapter 11 Diseases of the digestive system
- 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)
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry