K35.211 – Acute appendicitis with generalized peritonitis, with perforation and abscess
ICD-10-CM 2027 diagnosis code · Diseases of appendix
ICD-10-CM code
K35.211
- Code
K35.211(claims format:K35211)- Description
- Acute appendicitis with generalized peritonitis, with perforation and abscess
- Short description
- Acute appendicitis with gen peritonitis, with perf and abscs
- 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
- Parent codes
- K35 › K35.2 › K35.21
Notes for K35.211
Applicable to:
- Appendicitis (acute) with generalized (diffuse) peritonitis following rupture or perforation of appendix, with abscess
Index terms for K35.211
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Appendicitis, with, peritonitis NEC, generalized, with, abscess, with perforation or rupture
- Appendicitis, acute, with, peritonitis NEC, generalized, with, abscess, with perforation or rupture
- Appendicitis, with, peritonitis NEC, generalized, with, abscess, following rupture or perforation of appendix NOS
- Appendicitis, acute, with, peritonitis NEC, generalized, with, abscess, following rupture or perforation of appendix NOS
Related codes in K35.21
Frequently asked questions
What is ICD-10 code K35.211?
K35.211 is the ICD-10-CM code for acute appendicitis with generalized peritonitis, with perforation and abscess, in the block K35-K38 (Diseases of appendix).
Is K35.211 a billable code?
Yes. K35.211 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does K35.211 belong to?
It belongs to category K35 – Acute appendicitis.
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.