Relapsing fevers (A68) ICD-10-CM
The A68 code range covers relapsing fevers with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- recurrent fever
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- Lyme disease A69.2
Codes in the A68 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A68 range.
Louse-Borne Relapsing Fever
An infection that is caused by certain species of Rickettsia or Borrelia, which are transmitted to humans from infected lice; it is characterized by sudden fever, chills, headaches, myalgia, arthralgia, nausea, and possibly a rash. Symptoms usually persist for two to nine days, then disappear, with recurrence after several weeks if the patient remains untreated.
Relapsing Fever
An acute infection characterized by recurrent episodes of PYREXIA alternating with asymptomatic intervals of apparent recovery. This condition is caused by SPIROCHETES of the genus BORRELIA. It is transmitted by the BITES of either the body louse (PEDICULUS humanus corporis), for which humans are the reservoir, or by soft ticks of the genus ORNITHODOROS, for which rodents and other animals are the principal reservoirs.
Tick-Borne Relapsing Fever
An infection that is caused by certain species of Rickettsia or Borrelia, which are transmitted to humans from infected ticks; it is characterized by sudden fever, chills, headaches, myalgia, arthralgia, nausea, and possibly a rash. Symptoms usually persist for two to nine days, then disappear, with recurrence after several weeks if the patient remains untreated.
About the A68 Code Range
Relapsing fever is an infection caused by Borrelia spirochetes. Fever episodes recur, with symptom-free periods of apparent recovery between them.
The subdivisions distinguish fever spread by body lice, A68.0, from fever spread by ticks, A68.1. A68.9 is relapsing fever without a specified type.
Questions About This Page
How many billable codes are in the A68 range?
Of the 4 codes in this range, 3 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 A68 range classify?
The range classifies relapsing fevers. 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.
