Diseases of pulp and periapical tissues
In Diseases of oral cavity and salivary glands (K00-K14), chapter 11: Diseases of the Digestive System
12 billable codes under K04: 3 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
There are no chapter-specific rules for Chapter 11 yet, so the general rules in Section I.B apply.
All codes under K04
K04 can't be used on a claim. Pick a billable code below; grey headings group them.
- K04.0Pulpitis
- K04.01Reversible pulpitis
- K04.02Irreversible pulpitis
- K04.1Necrosis of pulp
- K04.2Pulp degeneration
- K04.3Abnormal hard tissue formation in pulp
- K04.4Acute apical periodontitis of pulpal origin
- K04.5Chronic apical periodontitis
- K04.6Periapical abscess with sinus
- K04.7Periapical abscess without sinus
- K04.8Radicular cyst
- K04.9Other and unspecified diseases of pulp and periapical tissues
- K04.90Unspecified diseases of pulp and periapical tissues
- K04.99Other diseases of pulp and periapical tissues
K04 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Tooth Disorders
Your teeth are made of a hard, bonelike material. There are four parts: You need your teeth for many activities that you may take for granted. These include eating, speaking and even smiling.
Read more about tooth disorders on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.