K81.9Billable
Cholecystitis, unspecified
- Chapter
- 11. Diseases of the digestive system
- Category
- K81
- Effective date
- October 1, 2026
Related codes in category K81
Frequently asked questions
What is ICD-10 code K81.9?
K81.9 is an ICD-10-CM diagnosis code for Cholecystitis, unspecified.
Is K81.9 a billable code?
Yes. K81.9 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is K81.9 in?
K81.9 falls under Chapter 11: Diseases of the digestive system.
When did K81.9 become effective?
K81.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to K81.9?
K81.9 belongs to category K81, which includes 4 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.