A00–B99: Certain Infectious and Parasitic Diseases
Chapter 1 of ICD-10-CM 2027, 1,309 codes in 22 blocks.
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Chapter instructions
Includes: conditions that are coded here
- diseases generally recognized as communicable or transmissible
Excludes2: not included here, code separately if applicable
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Use additional code: add a second code for this, listed after this one
- code to identify resistance to antimicrobial drugs (Z16.-)
Codes in this chapter
All codesBillable only1,068 results
- A68.0Louse-borne relapsing fever
- A68.1Tick-borne relapsing fever
- A68.9Relapsing fever, unspecified
- A69.0Necrotizing ulcerative stomatitis
- A69.1Other Vincent's infections
- A69.20Lyme disease, unspecified
- A69.21Meningitis due to Lyme disease
- A69.22Other neurologic disorders in Lyme disease
- A69.23Arthritis due to Lyme disease
- A69.29Other conditions associated with Lyme disease
- A69.8Other specified spirochetal infections
- A69.9Spirochetal infection, unspecified
- A70Chlamydia psittaci infections
- A71.0Initial stage of trachoma
- A71.1Active stage of trachoma
- A71.9Trachoma, unspecified
- A74.0Chlamydial conjunctivitis
- A74.81Chlamydial peritonitis
- A74.89Other chlamydial diseases
- A74.9Chlamydial infection, unspecified
- A75.0Epidemic louse-borne typhus fever due to Rickettsia prowazekii
- A75.1Recrudescent typhus [Brill's disease]
- A75.2Typhus fever due to Rickettsia typhi
- A75.3Typhus fever due to Rickettsia tsutsugamushi
- A75.9Typhus fever, unspecified
- A77.0Spotted fever due to Rickettsia rickettsii
- A77.1Spotted fever due to Rickettsia conorii
- A77.2Spotted fever due to Rickettsia siberica
- A77.3Spotted fever due to Rickettsia australis
- A77.40Ehrlichiosis, unspecified
- A77.41Ehrlichiosis chaffeensis [E. chaffeensis]
- A77.49Other ehrlichiosis
- A77.8Other spotted fevers
- A77.9Spotted fever, unspecified
- A78Q fever
- A79.0Trench fever
- A79.1Rickettsialpox due to Rickettsia akari
- A79.81Rickettsiosis due to Ehrlichia sennetsu
- A79.82Anaplasmosis [A. phagocytophilum]
- A79.89Other specified rickettsioses
- A79.9Rickettsiosis, unspecified
- A80.0Acute paralytic poliomyelitis, vaccine-associated
- A80.1Acute paralytic poliomyelitis, wild virus, imported
- A80.2Acute paralytic poliomyelitis, wild virus, indigenous
- A80.30Acute paralytic poliomyelitis, unspecified
- A80.39Other acute paralytic poliomyelitis
- A80.4Acute nonparalytic poliomyelitis
- A80.9Acute poliomyelitis, unspecified
- A81.00Creutzfeldt-Jakob disease, unspecified
- A81.01Variant Creutzfeldt-Jakob disease