K05.0 – Acute gingivitis

ICD-10-CM 2027 diagnosis code · Diseases of oral cavity and salivary glands

Non-billable header

ICD-10-CM code K05.0

Code: K05.0 (claims format: K050)
Description: Acute gingivitis
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 K05.0

K05.0 is a header code and cannot be used on claims. Choose the most specific code:

K05.00 – Acute gingivitis, plaque inducedBillable
K05.01 – Acute gingivitis, non-plaque inducedBillable

Notes for K05.0

Excludes1 (not coded here):

acute necrotizing ulcerative gingivitis (A69.1)
herpesviral [herpes simplex] gingivostomatitis (B00.2)

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

K05.1 – Chronic gingivitisHeader
K05.2 – Aggressive periodontitisHeader
K05.3 – Chronic periodontitisHeader
K05.4 – PeriodontosisBillable
K05.5 – Other periodontal diseasesBillable
K05.6 – Periodontal disease, unspecifiedBillable

Frequently asked questions

What is ICD-10 code K05.0?

K05.0 is the ICD-10-CM code for acute gingivitis, in the block K00-K14 (Diseases of oral cavity and salivary glands).

Is K05.0 a billable code?

No. K05.0 is a header code with more specific child codes; report one of the billable codes listed above.

What category does K05.0 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.