K37 – Unspecified appendicitis

ICD-10-CM 2027 diagnosis code · Diseases of appendix

Billable code

ICD-10-CM code K37
Code
K37 (claims format: K37)
Description
Unspecified appendicitis
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
11. Diseases of the digestive system (K00-K95)
Block
K35-K38 Diseases of appendix

Notes for K37

Excludes1 (not coded here):
  • unspecified appendicitis with peritonitis (K35.2-, K35.3-)

Index terms for K37

Entries in the ICD-10-CM alphabetic index that lead to this code:

Frequently asked questions

What is ICD-10 code K37?

K37 is the ICD-10-CM code for unspecified appendicitis, in the block K35-K38 (Diseases of appendix).

Is K37 a billable code?

Yes. K37 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.