ICD-10-CM · FY 2026 APRIL UPDATE
K04
Diseases of pulp and periapical tissues
Diagnosis reference
Nonbillable categoryThis entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.
Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification
Related entries
Up to 30 descendants in this category
| CODE | DESCRIPTION | TYPE |
|---|---|---|
| K04.0 | Pulpitis | Category |
| K04.01 | Reversible pulpitis | Billable |
| K04.02 | Irreversible pulpitis | Billable |
| K04.1 | Necrosis of pulp | Billable |
| K04.2 | Pulp degeneration | Billable |
| K04.3 | Abnormal hard tissue formation in pulp | Billable |
| K04.4 | Acute apical periodontitis of pulpal origin | Billable |
| K04.5 | Chronic apical periodontitis | Billable |
| K04.6 | Periapical abscess with sinus | Billable |
| K04.7 | Periapical abscess without sinus | Billable |
| K04.8 | Radicular cyst | Billable |
| K04.9 | Other and unspecified diseases of pulp and periapical tissues | Category |
| K04.90 | Unspecified diseases of pulp and periapical tissues | Billable |
| K04.99 | Other diseases of pulp and periapical tissues | Billable |
Use the complete reference
This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.
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