ICD10BillableValid for clinical use
ICD-10 Code K05.5: Other periodontal diseases
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).
When is it used?
- May be used when a clinician documents other periodontal diseases in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
11Diseases of the digestive system (K00-K95)
block
K00-K14Diseases of oral cavity and salivary glands
category
K05Gingivitis and periodontal diseases
currentK05
Official coding notes
Inclusion terms
- Combined periodontic-endodontic lesion
- Narrow gingival width (of periodontal soft tissue)
Excludes2 (may code together if documented)
- leukoplakia of gingiva (K13.21)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
GastroenterologistGeneral Physician
Related codes
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 449908004high
Aggressive periodontitis
Source: SNOMED International ICD-10 map
SNOMED_CT 895214001high
Damage to supporting structure of tooth
Source: SNOMED International ICD-10 map
SNOMED_CT 737265006high
Developmental anomaly of periodontal tissue
Source: SNOMED International ICD-10 map
SNOMED_CT 426552009high
Intrabony periodontal defect
Source: SNOMED International ICD-10 map
SNOMED_CT 706984006high
Necrotizing periodontal disease
Source: SNOMED International ICD-10 map
SNOMED_CT 235006007high
Periodontal and endodontic lesion
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
K05.5
Common synonyms
Other periodontal diseases
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.