Other spirochetal infections (A69) ICD-10-CM
The A69 code range covers other spirochetal infections with 11 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the A69 Range 11 codes · 9 billable
- A69 Other spirochetal infectionsNon-billable
- A69.0 Necrotizing ulcerative stomatitis
- A69.1 Other Vincent's infections
- A69.2 Lyme diseaseNon-billable
- A69.20 Lyme disease, unspecified
- A69.21 Meningitis due to Lyme disease
- A69.22 Other neurologic disorders in Lyme disease
- A69.23 Arthritis due to Lyme disease
- A69.29 Other conditions associated with Lyme disease
- A69.8 Other specified spirochetal infections
- A69.9 Spirochetal infection, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A69 range.
Gingivitis, Necrotizing Ulcerative
An acute or chronic GINGIVITIS characterized by redness and swelling, NECROSIS extending from the interdental papillae along the gingival margins, PAIN; HEMORRHAGE, necrotic odor, and often a pseudomembrane. The condition may extend to the ORAL MUCOSA; TONGUE; PALATE; or PHARYNX. The etiology is somewhat unclear, but may involve a complex of FUSOBACTERIUM NUCLEATUM along with spirochetes BORRELIA or TREPONEMA.
Lyme Disease
An infectious disease caused by a spirochete, BORRELIA BURGDORFERI, which is transmitted chiefly by Ixodes dammini (see IXODES) and pacificus ticks in the United States and Ixodes ricinis (see IXODES) in Europe. It is a disease with early and late cutaneous manifestations plus involvement of the nervous system, heart, eye, and joints in variable combinations. The disease was formerly known as Lyme arthritis and first discovered at Old Lyme, Connecticut.
Noma
A severe gangrenous process occurring predominantly in debilitated and malnourished children, especially in underdeveloped countries. It typically begins as a small vesicle or ulcer on the gingiva that rapidly becomes necrotic and spreads to produce extensive destruction of the buccal and labial mucosa and tissues of the face, which may result in severe disfigurement and even death. Various bacteria have been implicated in the etiology. (Dorland, 27th ed)
About the A69 Code Range
Lyme disease appears here alongside mouth infections and other spirochetal infections.
A69.0 identifies necrotizing ulcerative stomatitis, a mouth condition. A69.1 identifies other Vincent's infections. A69.2 groups Lyme disease by the associated condition: A69.21 identifies meningitis, A69.22 other nervous system disorders, and A69.23 joint disease. The Lyme branch also has codes for unspecified disease and other associated conditions. A69.8 and A69.9 distinguish other specified spirochetal infections from unspecified ones.
Questions About This Page
How many billable codes are in the A69 range?
Of the 11 codes in this range, 9 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the A69 range classify?
The range classifies other spirochetal infections. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
