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2025 ICD-10-CM code A77.8

Other spotted fevers. This encompasses spotted fevers not classified elsewhere, such as those caused by Rickettsia 364D/R. philipii (Pacific Coast tick fever), Rickettsia africae (African tick bite fever), and Rickettsia parkeri.

Use A77.8 when the spotted fever is confirmed to be caused by a rickettsial species not explicitly listed in the other A77 codes. Do not use A77.8 if the cause of the spotted fever is identified as one of the specified types (e.g., Rocky Mountain spotted fever). Consult official coding guidelines for detailed instructions and updates.

Medical necessity for using A77.8 relies on demonstrating the clinical presentation, diagnostic testing, and treatment align with an other spotted fever diagnosis.The documentation should clearly support that the patient's condition is a spotted fever other than those specifically classified.

Clinicians should consider patient history (travel, tick bites), symptoms (fever, headache, rash, myalgias, arthralgias, confusion, lethargy), and diagnostic findings (CBC, serologic tests, IFA, lumbar puncture, skin biopsy) to diagnose. Treatment typically involves antibiotics (doxycycline), supportive care (oxygen, IV fluids), and monitoring for complications.

In simple words: This code represents a spotted fever that is not otherwise specified. Spotted fevers are infections spread by the bites of infected ticks, mites, fleas, or lice.

Other spotted fevers refers to infectious disease primarily caused by various species of bacteria typically transmitted via the bites of fleas, lice, mites, or ticks carried by rodents and some domestic animals.This code is used when the specific spotted fever is not covered by another code, encompassing less common rickettsial infections like Pacific Coast tick fever, African tick bite fever, and those caused by Rickettsia parkeri.

Example 1: A patient presents with fever, headache, and a characteristic rash after a recent camping trip.Laboratory tests confirm a spotted fever not caused by R. rickettsii, conorii, siberica, or australis. A77.8 is used., A patient returning from travel in Africa develops fever, muscle aches, and skin lesions.Testing identifies Rickettsia africae as the causative agent. A77.8 is applied., A patient living in the Pacific Coast region develops fever and a rash.Pacific Coast tick fever (caused by Rickettsia 364D/R. philipii) is confirmed, so A77.8 is assigned.

Documentation should include details of the patient's symptoms (e.g., fever, rash, headache, muscle aches), exposure history (e.g., tick bites, travel), laboratory findings (e.g., serology, blood tests), and clinical findings supporting the diagnosis of a spotted fever not otherwise specified.

** For accurate coding, it's crucial to differentiate A77.8 from other, more specific, spotted fever diagnoses. Always ensure the documentation clearly points towards an "other" spotted fever before assigning this code. Consider consulting with an infectious disease specialist for complex cases.

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