K04 ICD-10-CM Code: Diseases of pulp and periapical tissues
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
K04Diseases of pulp and periapical tissues
ICD-10-CM diagnosis code · United States clinical modification
Where K04 sits
- 1
Chapter 11
Diseases of the digestive system (K00-K95)
- 2
Section
Diseases of oral cavity and salivary glands (K00-K14)
- 3
Category K04
Diseases of pulp and periapical tissues
- 4
Code K04
Diseases of pulp and periapical tissues
Codes under K04
K04 is a non-billable category. Choose the child code that best matches the documented diagnosis.
K04.0PulpitisK04.1Necrosis of pulpK04.2Pulp degenerationK04.3Abnormal hard tissue formation in pulpK04.4Acute apical periodontitis of pulpal originK04.5Chronic apical periodontitisK04.6Periapical abscess with sinusK04.7Periapical abscess without sinusK04.8Radicular cystK04.9Other and unspecified diseases of pulp and periapical tissuesNotes for this code
Inclusion terms
No inclusion terms are listed for K04.
Code first
No “code first” instruction is listed for K04.
Use additional code
No “use additional code” instruction is listed for K04.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for K04.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for K04.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code K04 mean?
K04 is the FY 2027 U.S. ICD-10-CM code for “Diseases of pulp and periapical tissues.”
Is K04 a billable or specific ICD-10-CM code?
No. K04 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is K04 located in ICD-10-CM?
K04 is listed in Chapter 11, Diseases of the digestive system (K00-K95), within Diseases of oral cavity and salivary glands (K00-K14) (K00–K14), under category K04, Diseases of pulp and periapical tissues.
What coding notes are listed for K04?
No inclusion terms are listed for K04 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.