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K05.221 ICD-10-CM Code: Aggressive periodontitis, generalized, slight

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 011 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH MCC (MDC PRE)
  • MS-DRG 012 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH CC (MDC PRE)
  • MS-DRG 013 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITHOUT CC/MCC (MDC PRE)
  • MS-DRG 157 — DENTAL AND ORAL DISEASES WITH MCC (MDC 03)
  • MS-DRG 158 — DENTAL AND ORAL DISEASES WITH CC (MDC 03)
  • MS-DRG 159 — DENTAL AND ORAL DISEASES WITHOUT CC/MCC (MDC 03)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Aggressive periodontitis, generalized, slight is a billable ICD-10-CM diagnosis code (K05.221).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for K05.221 in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use 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)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Indexed Clinical Terms (4)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic), gingival, aggressive, generalized, slight
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic), gum, aggressive, generalized, slight
  • Periodontitis (chronic) (complex) (compound) (local) (simplex), acute, generalized, slight
  • Periodontitis (chronic) (complex) (compound) (local) (simplex), aggressive, generalized, slight

Frequently Compared Codes

The official Excludes notes on K05.221 name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

  • FY2017 — 2016-10-01
    Added to the code set
    Aggressive periodontitis, generalized, slight
    FY2017 changes

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Relationships & Classification

Official ICD-10-CM tabular notes on other codes that name K05.221 or its code family.

1 Excludes1 notes: K04.4 (via K05.2.-).

1 Excludes2 notes: K13 (via K05.-).

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 6 MS-DRGs: DRG 011 (MDC PRE), DRG 012 (MDC PRE), DRG 013 (MDC PRE), DRG 157 (MDC 03), DRG 158 (MDC 03), DRG 159 (MDC 03).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):DIG002 — Disorders of teeth and gingiva (default); DEN001 — Any dental condition including traumatic injury; DEN002 — Nontraumatic dental conditions; DEN003 — Caries, periodontitis, and other preventable dental conditions.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Contextual Map

Every relationship of K05.221 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • K00-K95 — Chapter 11: Diseases of the Digestive System (K00-K95) (K00-K95) [Hierarchy]
  • K00-K14 — Diseases of oral cavity and salivary glands [Hierarchy]

Referenced by Excludes1 notes

  • K04.4 — Acute apical periodontitis of pulpal origin [Excludes1](via K05.2.-): “acute periodontitis (K05.2-)” · check together

Referenced by Excludes2 notes

  • K13 — Other diseases of lip and oral mucosa [Excludes2](via K05.-): “certain disorders of gingiva and edentulous alveolar ridge (K05-K06)” · check together

Clinical classification (CCSR)

  • DIG002 — Disorders of teeth and gingiva [CCSR]
  • DEN001 — Any dental condition including traumatic injury [CCSR]
  • DEN002 — Nontraumatic dental conditions [CCSR]
  • DEN003 — Caries, periodontitis, and other preventable dental conditions [CCSR]

Potential MS-DRG

  • DRG 011 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH MCC [MS-DRG]: “TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH MCC (MDC PRE)”
  • DRG 012 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH CC [MS-DRG]: “TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITH CC (MDC PRE)”
  • DRG 013 — TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITHOUT CC/MCC [MS-DRG]: “TRACHEOSTOMY FOR FACE, MOUTH AND NECK DIAGNOSES OR LARYNGECTOMY WITHOUT CC/MCC (MDC PRE)”
  • DRG 157 — DENTAL AND ORAL DISEASES WITH MCC [MS-DRG]: “DENTAL AND ORAL DISEASES WITH MCC (MDC 03)”
  • DRG 158 — DENTAL AND ORAL DISEASES WITH CC [MS-DRG]: “DENTAL AND ORAL DISEASES WITH CC (MDC 03)”
  • DRG 159 — DENTAL AND ORAL DISEASES WITHOUT CC/MCC [MS-DRG]: “DENTAL AND ORAL DISEASES WITHOUT CC/MCC (MDC 03)”

MDC crossing · procedures (5300)

  • Pre-MDC[MDC crossing]: “Pre-MDC — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • MDC 03 — Diseases and Disorders of the Ear, Nose, Mouth and Throat [MDC crossing]: “Diseases and Disorders of the Ear, Nose, Mouth and Throat — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • 02HA0QZ — Insertion of Implantable Heart Assist System into Heart, Open Approach [Same-MDC procedure]: “Insertion of Implantable Heart Assist System into Heart, Open Approach — grouped in MDC PRE, the procedure side of this code's crossing.” · check together
  • 02HA0RZ — Insertion of Short-term External Heart Assist System into Heart, Open Approach [Same-MDC procedure]: “Insertion of Short-term External Heart Assist System into Heart, Open Approach — grouped in MDC PRE, the procedure side of this code's crossing.” · check together
  • 02HA3QZ — Insertion of Implantable Heart Assist System into Heart, Percutaneous Approach [Same-MDC procedure]: “Insertion of Implantable Heart Assist System into Heart, Percutaneous Approach — grouped in MDC PRE, the procedure side of this code's crossing.” · check together
  • 02HA4QZ — Insertion of Implantable Heart Assist System into Heart, Percutaneous Endoscopic Approach [Same-MDC procedure]: “Insertion of Implantable Heart Assist System into Heart, Percutaneous Endoscopic Approach — grouped in MDC PRE, the procedure side of this code's crossing.” · check together
  • 02RA0LZ — Replacement of Heart with Biologic and Synthetic Substitute, Autoregulated Electrohydraulic, Open Approach [Same-MDC procedure]: “Replacement of Heart with Biologic and Synthetic Substitute, Autoregulated Electrohydraulic, Open Approach — grouped in MDC PRE, the procedure side of this code's crossing.” · check together
  • and 5295 more

Index entries

  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic), gingival, aggressive, generalized, slight[Index term]
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic), gum, aggressive, generalized, slight[Index term]
  • Periodontitis (chronic) (complex) (compound) (local) (simplex), acute, generalized, slight[Index term]
  • Periodontitis (chronic) (complex) (compound) (local) (simplex), aggressive, generalized, slight[Index term]

Nearest codes (33)

  • K05 — Gingivitis and periodontal diseases [Sibling]
  • K05.0 — Acute gingivitis [Sibling]
  • K05.00 — Acute gingivitis, plaque induced [Sibling]
  • K05.01 — Acute gingivitis, non-plaque induced [Sibling]
  • K05.1 — Chronic gingivitis [Sibling]
  • K05.10 — Chronic gingivitis, plaque induced [Sibling]
  • K05.11 — Chronic gingivitis, non-plaque induced [Sibling]
  • K05.2 — Aggressive periodontitis [Sibling]
  • and 25 more

Change history

  • FY2017 — Added to the code set [Change history]

Nearest Codes in This Family

Official ICD-10-CM classifications closest to K05.221 in its code family, with their registry titles.

  • K05.211 — Aggressive periodontitis, localized, slight
  • K05.212 — Aggressive periodontitis, localized, moderate
  • K05.213 — Aggressive periodontitis, localized, severe
  • K05.219 — Aggressive periodontitis, localized, unspecified severity
  • K05.22 — Aggressive periodontitis, generalized
  • K05.222 — Aggressive periodontitis, generalized, moderate
  • K05.223 — Aggressive periodontitis, generalized, severe
  • K05.229 — Aggressive periodontitis, generalized, unspecified severity
  • K05.3 — Chronic periodontitis
  • K05.30 — Chronic periodontitis, unspecified

View all codes in the K05 family