ICD-10-CM 2027
ICD-10 code for acute catarrhal gingivitis
From the official ICD-10-CM alphabetic index entry “Gingivitis › acute (catarrhal)”. Page updated September 29, 2026.
About coding acute catarrhal gingivitis
The ICD-10-CM code for acute catarrhal gingivitis is K05.00 (Acute gingivitis, plaque induced). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K05.00.
Within K05.0 (acute gingivitis), K05.00 is specifically for acute gingivitis, plaque induced. Related codes cover non-plaque induced (K05.01).
Use an additional 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) and 2 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific acute catarrhal gingivitis codes (official index)
Common questions about acute catarrhal gingivitis ICD-10 codes
What is the ICD-10 code for acute catarrhal gingivitis?
- K05.00 — Acute gingivitis, plaque induced. More specific codes apply when the documentation supports them: A69.1, K05.01, K05.00.
What is the ICD-10 code for necrotizing acute catarrhal gingivitis?
- A69.1 — Other Vincent's infections.
What is the ICD-10 code for nonplaque induced acute catarrhal gingivitis?
- K05.01 — Acute gingivitis, non-plaque induced.
What is the ICD-10 code for plaque induced acute catarrhal gingivitis?
- K05.00 — Acute gingivitis, plaque induced.
Is K05.00 billable?
- Yes. K05.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K05.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K05.00 as a principal diagnosis.
Is K05.00 a CC or MCC?
- No. K05.00 is neither a CC nor an MCC under MS-DRG v44.0.