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ICD-10-CM 2027

ICD-10 code for Fusospirillosis

A69.1

Other Vincent's infections

✓ Billable / specificCC — complication/comorbidity

From the official ICD-10-CM alphabetic index entry “Fusospirillosis (mouth) (tongue) (tonsil)”. Page updated September 29, 2026.

About coding Fusospirillosis

The ICD-10-CM code for Fusospirillosis is A69.1 (Other Vincent's infections).

Within A69, choose A69.1 (Other Vincent's infections) only when documentation doesn't support a more specific option: necrotizing ulcerative stomatitis (A69.0), Lyme disease (A69.2), other specified spirochetal infections (A69.8) and spirochetal infection, unspecified (A69.9).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 152 (Otitis Media and URI with MCC, relative weight 1.1151) and DRG 153 (Otitis Media and URI without MCC, relative weight 0.7421), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

Common questions about Fusospirillosis ICD-10 codes

What is the ICD-10 code for Fusospirillosis?

A69.1 — Other Vincent's infections.

Is A69.1 billable?

Yes. A69.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can A69.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict A69.1 as a principal diagnosis.

Is A69.1 a CC or MCC?

A69.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.