DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

K05 Gingivitis and periodontal diseases

  • Header · not billable

K05 is not billable. The category heads 25 billable codes in FY2027, grouped under 7 subdivisions.

Index → code

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K00-K14 Diseases of oral cavity and salivary glands (K00-K14)
  3. K05 Gingivitis and periodontal diseases
Billable codes
25
Subdivisions
7
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
97

Codes in K05

  1. K05.0
    Acute gingivitis
    Header
    Excludes1 2

    Excludes1

    • acute necrotizing ulcerative gingivitis (A69.1) A69.1
    • herpesviral [herpes simplex] gingivostomatitis (B00.2) B00.2
  2. K05.00
    Acute gingivitis, plaque induced
    Billable
    Inclusion terms 2

    Inclusion terms

    • Acute gingivitis NOS
    • Plaque induced gingival disease
  3. K05.01
    Acute gingivitis, non-plaque induced
    Billable
  4. K05.1
    Chronic gingivitis
    Header
    Inclusion terms 6, Code first 1

    Inclusion terms

    • Desquamative gingivitis (chronic)
    • Gingivitis (chronic) NOS
    • Hyperplastic gingivitis (chronic)
    • Pregnancy associated gingivitis
    • Simple marginal gingivitis (chronic)
    • Ulcerative gingivitis (chronic)

    Code first

    • , if applicable, diseases of the digestive system complicating pregnancy (O99.61-) O99.61
  5. K05.10
    Chronic gingivitis, plaque induced
    Billable
    Inclusion terms 2

    Inclusion terms

    • Chronic gingivitis NOS
    • Gingivitis NOS
  6. K05.11
    Chronic gingivitis, non-plaque induced
    Billable
  7. K05.2
    Aggressive periodontitis
    Header
    Inclusion terms 1, Excludes1 3

    Inclusion terms

    • Acute pericoronitis

    Excludes1

    • acute apical periodontitis (K04.4) K04.4
    • periapical abscess (K04.7) K04.7
    • periapical abscess with sinus (K04.6) K04.6
  8. K05.20
    Aggressive periodontitis, unspecified
    Billable
  9. K05.21
    Aggressive periodontitis, localized
    Header
    Inclusion terms 1

    Inclusion terms

    • Periodontal abscess
  10. K05.211
    Aggressive periodontitis, localized, slight
    Billable
  11. K05.212
    Aggressive periodontitis, localized, moderate
    Billable
  12. K05.213
    Aggressive periodontitis, localized, severe
    Billable
  13. K05.219
    Aggressive periodontitis, localized, unspecified severity
    Billable
  14. K05.22
    Aggressive periodontitis, generalized
    Header
  15. K05.221
    Aggressive periodontitis, generalized, slight
    Billable
  16. K05.222
    Aggressive periodontitis, generalized, moderate
    Billable
  17. K05.223
    Aggressive periodontitis, generalized, severe
    Billable
  18. K05.229
    Aggressive periodontitis, generalized, unspecified severity
    Billable
  19. K05.3
    Chronic periodontitis
    Header
    Inclusion terms 4, Excludes1 1

    Inclusion terms

    • Chronic pericoronitis
    • Complex periodontitis
    • Periodontitis NOS
    • Simplex periodontitis

    Excludes1

    • chronic apical periodontitis (K04.5) K04.5
  20. K05.30
    Chronic periodontitis, unspecified
    Billable
  21. K05.31
    Chronic periodontitis, localized
    Header
  22. K05.311
    Chronic periodontitis, localized, slight
    Billable
  23. K05.312
    Chronic periodontitis, localized, moderate
    Billable
  24. K05.313
    Chronic periodontitis, localized, severe
    Billable
  25. K05.319
    Chronic periodontitis, localized, unspecified severity
    Billable
  26. K05.32
    Chronic periodontitis, generalized
    Header
  27. K05.321
    Chronic periodontitis, generalized, slight
    Billable
  28. K05.322
    Chronic periodontitis, generalized, moderate
    Billable
  29. K05.323
    Chronic periodontitis, generalized, severe
    Billable
  30. K05.329
    Chronic periodontitis, generalized, unspecified severity
    Billable
  31. K05.4
    Periodontosis
    Billable
    Inclusion terms 1

    Inclusion terms

    • Juvenile periodontosis
  32. K05.5
    Other periodontal diseases
    Billable
    Inclusion terms 2, Excludes2 1

    Inclusion terms

    • Combined periodontic-endodontic lesion
    • Narrow gingival width (of periodontal soft tissue)

    Excludes2

    • leukoplakia of gingiva (K13.21) K13.21
  33. K05.6
    Periodontal disease, unspecified
    Billable

Sources of each column.

Instructions

At K05

Use additional code

  • code to identify:
  • alcohol abuse and dependence (F10.-) F10
  • exposure to environmental tobacco smoke (Z77.22) Z77.22
  • exposure to tobacco smoke in the perinatal period (P96.81) P96.81
  • history of tobacco dependence (Z87.891) Z87.891
  • occupational exposure to environmental tobacco smoke (Z57.31) Z57.31
  • tobacco dependence (F17.-) F17
  • tobacco use (Z72.0) Z72.0

Notes that also apply

Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.

Index entries

  • Gingivitis → K05.10
  • Gingivostomatitis → K05.10
  • Periodontitis (chronic) (complex) (compound) (local) (simplex) → K05.30
  • Paradentosis → K05.4
  • Parodontosis → K05.4
  • Periclasia → K05.4
  • Periodontoclasia → K05.4
  • Periodontosis (juvenile) → K05.4
  • Catarrh, catarrhal (acute) (febrile) (infectious) (inflammation)gingivitis → K05.00
  • Disease, diseasedJourdain's (acute gingivitis) → K05.00
  • Gingivitisacute (catarrhal) → K05.00
  • Gingivitischronic (desquamative) (hyperplastic) (simple marginal) (pregnancy associated) (ulcerative) → K05.10
  • Infection, infected, infective (opportunistic)gingiva (chronic) → K05.10
  • Infection, infected, infective (opportunistic)gum (chronic) → K05.10
  • Inflammation, inflamed, inflammatory (with exudation)gum → K05.10
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerativegingivitis → K05.10
  • Infection, infected, infective (opportunistic)peridental, periodontal → K05.20
  • Pericementitis (chronic) (suppurative)acute → K05.20
  • Periodontitis (chronic) (complex) (compound) (local) (simplex)acute → K05.20
  • Periodontitis (chronic) (complex) (compound) (local) (simplex)aggressive → K05.20
  • Suppuration, suppurativegum → K05.20
  • Periodontitis (chronic) (complex) (compound) (local) (simplex)localized → K05.319
  • Periodontitis (chronic) (complex) (compound) (local) (simplex)generalized → K05.329
  • Lesion(s) (nontraumatic)combined periodontic - endodontic → K05.5
  • Lesion(s) (nontraumatic)periodontal, due to traumatic occlusion → K05.5
  • Narrowgingival width (of periodontal soft tissue) → K05.5
  • Disease, diseasedparodontal → K05.6
  • Disease, diseasedperiodontal → K05.6
  • Catarrh, catarrhal (acute) (febrile) (infectious) (inflammation)gingivitisplaque induced → K05.00
  • Disease, diseasedgingivaplaque induced → K05.00
  • Disease, diseasedJourdain's (acute gingivitis)plaque induced → K05.00
  • Gingivitisacute (catarrhal)plaque induced → K05.00
  • Infection, infected, infective (opportunistic)gingiva (chronic)acute → K05.00
  • Infection, infected, infective (opportunistic)gum (chronic)acute → K05.00
  • Catarrh, catarrhal (acute) (febrile) (infectious) (inflammation)gingivitisnonplaque induced → K05.01
  • Disease, diseasedJourdain's (acute gingivitis)nonplaque induced → K05.01
  • Gingivitisacute (catarrhal)nonplaque induced → K05.01
  • Disturbance(s)keratinization NECgingiva → K05.10
  • Gingivitischronic (desquamative) (hyperplastic) (simple marginal) (pregnancy associated) (ulcerative)plaque induced → K05.10
  • Infection, infected, infective (opportunistic)gingiva (chronic)plaque induced → K05.10

57 more, longer entries are not listed; the search box finds them by word.

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