K05.3 ICD-10-CM Code: Chronic periodontitis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
K05.3Chronic periodontitis
ICD-10-CM diagnosis code · United States clinical modification
Where K05.3 sits
- 1
Chapter 11
Diseases of the digestive system (K00-K95)
- 2
Section
Diseases of oral cavity and salivary glands (K00-K14)
- 3
Category K05
Gingivitis and periodontal diseases
- 4
Code K05.3
Chronic periodontitis
Codes under K05.3
K05.3 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
- Chronic pericoronitis
- Complex periodontitis
- Periodontitis NOS
- Simplex periodontitis
Code first
No “code first” instruction is listed for K05.3.
Use additional code
No “use additional code” instruction is listed for K05.3.
Excludes1
Conditions that should not be reported together with this code.
- chronic apical periodontitis (K04.5)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for K05.3.
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 K05.3 mean?
K05.3 is the FY 2027 U.S. ICD-10-CM code for “Chronic periodontitis.”
Is K05.3 a billable or specific ICD-10-CM code?
No. K05.3 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 K05.3 located in ICD-10-CM?
K05.3 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 K05, Gingivitis and periodontal diseases.
What coding notes are listed for K05.3?
Its listed inclusion terms are Chronic pericoronitis; Complex periodontitis; Periodontitis NOS; Simplex periodontitis. No code-first instruction is listed. Excludes1 notes: chronic apical periodontitis (K04.5). No Excludes2 note is listed.