FY2019
Effective from
- Specificity changed
- Code-level rules changed
Acute appendicitis with localized peritonitis
Category — select a more specific code
CDC/NCHS · FY2019For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2015-10-01
Latest recorded change · FY2019
Effective from
Acute appendicitis with localized peritonitis
Category — select a more specific code
CDC/NCHS · FY2019| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | Code-level rules changed |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | Specificity changed · Code-level rules changed |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | No tabular change |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | No tabular change |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | No tabular change |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
Historical mapping only; not an automatic code substitution.
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
K35.30Acute appendicitis with localized peritonitis, without perforation or gangreneBillable / specificK35.31Acute appendicitis with localized peritonitis and gangrene, without perforationBillable / specificK35.32Acute appendicitis with perforation, localized peritonitis, and gangrene, without abscessBillable / specificK35.33Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscessBillable / specificOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| K35.2 | Acute appendicitis with generalized peritonitis | Category · further specificity required |
| K35.8 | Other and unspecified acute appendicitis | Category · further specificity required |
Official titles and instructions are preserved in their source language. Official sources ↗
Excludes 1 · unspecified appendicitis with peritonitis (K35.2-, K35.3-)
Excludes 2 · abscess of appendix (K35.3-)
Excludes 2 · perforation (nontraumatic) of appendix (K35.2-, K35.3-)