2026 ICD-10-CM Diagnosis Code A69.1Other Vincent's infections

ICD-10-CM Codes›A00–B99›A65-A69›A69

ICD-10-CM A69.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A69.1 is a billable ICD-10-CM diagnosis code for other Vincent's infections. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 152 through 153. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury; Nontraumatic dental conditions; and Parasitic, other specified and unspecified infections.

Code Identity

ICD-10-CM Code
A69.1
Billable Status
Yes — Valid for Submission
Code Describes
Other Vincent's infections
Short Description
Other Vincent's infections
Same as the full description in the CMS dataset.
Parent Code
A69
Other spirochetal infections

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA65-A69Other spirochetal diseases
CategoryA69Other spirochetal infections
This CodeA69.1Other Vincent's infections

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute gingivitis
  • Acute necrotizing stomatitis
  • Acute necrotizing ulcerative gingivitis
  • Acute necrotizing ulcerative gingivostomatitis
  • Acute ulcerative gingivitis
  • Gangrenous pharyngitis
  • Gingival disease caused by bacteria
  • Gingivostomatitis
  • Infection caused by Fusobacterium
  • Necrotizing gingivostomatitis
  • Necrotizing ulcerative gingivitis
  • Necrotizing ulcerative mucositis
  • Tonsillitis caused by Gram negative bacteria
  • Ulcer of pharynx
  • Ulcer of tonsil
  • Ulceration of gingivae
  • Ulcerative gingivitis
  • Ulcerative pharyngitis
  • Ulcerative stomatitis
  • Ulcerative tonsillitis
  • Vincent's angina
  • Vincent's laryngitis
  • Vincent's tonsillitis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Fusospirochetal pharyngitis
  • Necrotizing ulcerative (acute) gingivitis
  • Necrotizing ulcerative (acute) gingivostomatitis
  • Spirochetal stomatitis
  • Trench mouth
  • Vincent's angina
  • Vincent's gingivitis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Angina(attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)
      • membranous
        • Vincent's
    • Angina(attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)
      • pseudomembranous
    • Angina(attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)
      • Vincent's
    • Fusospirillosis(mouth) (tongue) (tonsil)
    • Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
      • pharynx
        • Vincent's
    • Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
      • throat
        • Vincent's
    • Gingivitis
      • acute (catarrhal)
        • necrotizing
    • Gingivitis
      • necrotizing ulcerative (acute)
    • Gingivitis
      • pellagrous
        • acute necrotizing
    • Gingivitis
      • Vincent's
    • Gingivostomatitis
      • necrotizing ulcerative (acute)
    • Infection, infected, infective(opportunistic)
      • Vincent's (gum) (mouth) (tonsil)
    • Laryngitis(acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative)
      • Vincent's
    • Laryngotracheitis(acute) (Infectional) (infective) (viral)
      • Vincent's
    • Necrosis, necrotic(ischemic)
      • pharynx
        • Vincent's
    • Pharyngitis(acute) (catarrhal)(gangrenous) (infective) (malignant) (membranous) (phlegmonous) (pseudomembranous) (simple) (subacute) (suppurative) (ulcerative) (viral)
      • fusospirochetal
    • Plaut(-Vincent) disease
    • Stomatitis(denture) (ulcerative)
      • spirochetal
    • Stomatitis(denture) (ulcerative)
      • ulceromembranous
    • Stomatitis(denture) (ulcerative)
      • Vincent's
    • Tonsillitis(acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (parenchymatous) (phlegmonous) (pseudomembranous) (purulent) (septic) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral)
      • Vincent's
    • Trench
      • mouth
    • Vincent's infection(angina) (gingivitis)
    • Vincent's infection(angina) (gingivitis)
      • stomatitis NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DEN001
Any dental condition including traumatic injury
Default principal diagnosis: inpatient No · outpatient No
CCSR DEN002
Nontraumatic dental conditions
Default principal diagnosis: inpatient No · outpatient No
CCSR INF009
Parasitic, other specified and unspecified infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Tumor Protein 63|CUSP|Chronic Ulcerative Stomatitis Protein|Keratinocyte Transcription Factor KET|TP63|Transformation-Related Protein 63|Tumor Protein p73-Like|p40|p51|p63|p73L

    tumor protein 63 (680 aa, ~77 kda) is encoded by the human tp63 gene. this protein plays a role in the mediation of both transcription and limb morphogenesis.

  • Ulcerative Stomatitis

    inflammation of the mouth mucosa associated with the presence of ulcers.

Patient EducationClinical

Bacterial Infections

Bacteria are tiny organisms (living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. They can be found almost everywhere on Earth. There are lots of bacteria in and on your body. In fact, your body has about 10 times more bacteria cells than human cells.

The full article covers:

  • What are bacteria?
  • How do bacterial infections spread?
  • What are the treatments for bacterial infections?
  • Can bacterial infections be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert A69.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
101 Vincent's angina
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About A69.1Overview

Is A69.1 (Other spirochetal infections) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other Vincent's infections on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does A69.1 group to?

When other Vincent's infections is the principal diagnosis on an inpatient stay, it groups to MS-DRG 152, 153, with relative weights from 0.7382 to 1.1822 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of A69.1?

Under the General Equivalence Mappings, other Vincent's infections converts to ICD-9-CM 101 (Vincent's angina). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.