K05.3 – Chronic periodontitis
ICD-10-CM 2027 diagnosis code · Diseases of oral cavity and salivary glands
ICD-10-CM code
K05.3
- Code
K05.3(claims format:K053)- Description
- Chronic periodontitis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K00-K14 Diseases of oral cavity and salivary glands
- Parent codes
- K05
Billable codes under K05.3
K05.3 is a header code and cannot be used on claims. Choose the most specific code:
- K05.30 – Chronic periodontitis, unspecifiedBillable
- K05.31 – Chronic periodontitis, localizedHeader (more codes below)
- K05.32 – Chronic periodontitis, generalizedHeader (more codes below)
Notes for K05.3
Applicable to:
- Chronic pericoronitis
- Complex periodontitis
- Periodontitis NOS
- Simplex periodontitis
Excludes1 (not coded here):
- chronic apical periodontitis (K04.5)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
K05 – Gingivitis and periodontal diseases
Use additional code:
- code to identify:
- alcohol abuse and dependence (F10.-)
- exposure to environmental tobacco smoke (Z77.22)
- exposure to tobacco smoke in the perinatal period (P96.81)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Related codes in K05
Frequently asked questions
What is ICD-10 code K05.3?
K05.3 is the ICD-10-CM code for chronic periodontitis, in the block K00-K14 (Diseases of oral cavity and salivary glands).
Is K05.3 a billable code?
No. K05.3 is a header code with more specific child codes; report one of the billable codes listed above.
What category does K05.3 belong to?
It belongs to category K05 – Gingivitis and periodontal diseases.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.