Is ICD-10-CM code K05 billable?

No, K05 (Gingivitis and periodontal diseases) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code K05 belong to?

K05 belongs to Chapter 11 of the ICD-10-CM tabular list: K00–K95 (Diseases of the Digestive System).

K05

Non-Billable

ChapterK00–K95

Rankcategory

Description

Gingivitis and periodontal diseases

About ICD-10-CM code K05

K05 is the ICD-10-CM diagnosis code for Gingivitis and periodontal diseases. It sits in K00-K95 Diseases of the Digestive System, within Diseases of oral cavity and salivary glands (K00-K14). K05 is not billable on its own, coders must choose one of its more specific child codes instead.

Use a more specific code (3 billable, 4 non-billable)

K05.0Acute gingivitishas subcodes K05.1Chronic gingivitishas subcodes K05.2Aggressive periodontitishas subcodes K05.3Chronic periodontitishas subcodes K05.4Periodontosis K05.5Other periodontal diseases K05.6Periodontal disease, unspecified

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 11: Diseases of the Digestive System (K00-K95).

CH11 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Instructional Notes

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)

Clinical Hierarchy

BillableHas subcodes

CH11Diseases of the digestive system (K00-K95)

K00-K14Diseases of oral cavity and salivary glands (K00-K14)

K05Gingivitis and periodontal diseasesNot billable

K05.0Acute gingivitisSubcodes

K05.1Chronic gingivitisSubcodes

K05.2Aggressive periodontitisSubcodes

K05.3Chronic periodontitisSubcodes

K05.4PeriodontosisBillable

K05.5Other periodontal diseasesBillable

K05.6Periodontal disease, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K05:

chapterCH11

Diseases of the digestive system (K00-K95)

View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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