Rickettsioses – Definitions, ICD 10 Codes & ICD 11 Codes
Definition of Rickettsioses: Any disease caused by an infection with the gram-negative bacteria Rickettsia. These diseases commonly present with fever, malaise, and rash. Transmission is commonly through the bite of an infected flea, louse, mite, or tick.
Typhus Fever
Definition of Typhus Fever: A disease caused by an infection with the gram-negative bacteria Rickettsia. This disease is characterised by fever, delirium, back pain, or arthralgia. Transmission is commonly through the bite of an infected flea, louse, mite, or tick.
ICD 11 Code For Typhus Fever
1C30 Typhus Fever
Exclusions: Rickettsiosis due to Ehrlichia sennetsu
1C30.0 Epidemic louse-borne typhus fever due to Rickettsia prowazekii
Definition of Epidemic louse-borne typhus fever due to Rickettsia prowazekii: This is a form of typhus so named because the disease often causes epidemics following wars and natural disasters. The causative organism is Rickettsia prowazekii, transmitted by the human body louse (Pediculus humanus corporis). This diagnosis is due to is a species of gram negative, Alpha Proteobacteria, obligate intracellular parasitic, aerobic bacteria that is the aetiologic agent of epidemic typhus, transmitted in the faeces of lice.
1C30.1 Recrudescent typhus
Definition of Recrudescent typhus: This is a form of typhus so named because the disease often causes epidemics following wars and natural disasters. The causative organism is Rickettsia prowazekii, transmitted by the human body louse (Pediculus humanus corporis).
Inclusions:
- Brill-Zinsser disease
1C30.2 Typhus fever due to Rickettsia typhi
1C30.3 Typhus fever due to Orientia tsutsugamushi
Inclusions:
- Tsutsugamushi fever
1C30.Y Other specified typhus fever
1C30.Z Typhus fever unspecified
ICD 10 Code For Typhus Fever
A75 Typhus Fever
Exclusions:
- Rickettsiosis due to Neorickettsia sennetsu [Ehrlichia sennetsu]
A75.0 Epidemic louse-borne typhus fever due to Rickettsia prowazekii
- Classical typhus (fever)
- Epidemic (louse-borne) typhus
A75.1 Recrudescent typhus [Brill disease]
- Brill-Zinsser disease
A75.2 Typhus fever due to Rickettsia typhi
- Murine (flea-borne) typhus
A75.3 Typhus fever due to Rickettsia tsutsugamushi
- Scrub (mite-borne) typhus
- Tsutsugamushi fever
A75.9 Typhus fever unspecified
- Typhus (fever) NOS
Spotted Fever
Definition of Spotted Fever: A disease caused by an infection with the gram-negative bacteria Rickettsia. This disease is characterised by fever, eschar, or rash. Transmission is commonly through the bite of an infected tick
ICD 11 Code For Spotted Fever
1C31 Spotted Fever
1C31.0 Spotted fever due to Rickettsia rickettsii
Inclusions:
- Rocky Mountain spotted fever
- Sao Paulo fever
1C31.1 Spotted fever due to Rickettsia conorii
Inclusions:
- Boutonneuse fever
- Mediterranean tick fever
- African tick typhus
- Kenya tick typhus
1C31.2 Spotted fever due to Rickettsia sibirica
Inclusions:
- North Asian tick fever
- Siberian tick typhus
1C31.3 Spotted fever due to Rickettsia australis
Inclusions:
- Queensland tick typhus
1C31.Y Other specified spotted fever
1C31.Z Spotted fever unspecified
ICD 10 Code For Spotted Fever
A77 Spotted Fever [tick-borne rickettsioses]
A77.0 Spotted fever due to Rickettsia rickettsii
- Rocky Mountain spotted fever
- Sao Paulo fever
A77.1 Spotted fever due to Rickettsia conorii
- African tick typhus
- Boutonneuse fever
- India tick typhus
- Kenya tick typhus
- Marseilles fever
- Mediterranean tick fever
A77.2 Spotted fever due to Rickettsia sibirica
- North Asian tick fever
- Siberian tick typhus
A77.3 Spotted fever due to Rickettsia australis
- Queensland tick typhus
A77.8 Other spotted fevers
A77.9 Spotted fever unspecified
- Tick-borne typhus NOS
Rickettsialpox
Definition of Rickettsialpox: An acute febrile disease caused by Rickettsia akari, which is transmitted from its rodent host by the house-mouse mite Liponyssoides sanguineus. An initial skin lesion at the site of a mite bite, often associated with lymphadenopathy, is followed by fever; a disseminated skin rash appears, which generally does not involve the palms and the soles, and lasts only a few days. Death is uncommon.
ICD 11 Code For Rickettsialpox
1C32 Rickettsialpox
Inclusions:
- Kew Gardens spotted fever
ICD 10 Code For Rickettsialpox
A79.1 Rickettsialpox due to Rickettsia akari
- Kew Garden fever
- Vesicular rickettsiosis
Q Fever
ICD 11 Code For Q Fever
1C33 Q Fever
Definition of Q fever: A disease caused by an infection with the gram-negative bacteria Coxiella burnetti. This disease is characterised by fever, or may be asymptomatic. Transmission is by inhalation of the bacteria, contact with contaminated milk, urine, faeces, vaginal mucus, or semen of infected animals, or through the bite of an infected tick.
Inclusions:
- Nine Mile fever
- Infection due to Coxiella burnetii
- Quadrilateral fever
ICD 10 Code For Q Fever
A78 Q Fever
Inclusions:
- Infection due to Coxiella burnetii
- Nine Mile fever
- Quadrilateral fever
Other specified Rickettsioses
ICD 11 Code for other specified Rickettsioses
1C3Y Other specified Rickettsioses
ICD 10 Code for other specified Rickettsioses
A79 Other Rickettsioses
A79.0 Trench fever
- Quintan fever
- Wolhynian fever
A79.8 Other specified rickettsioses
- Rickettsiosis due to Neorickettsia sennetsu [Ehrlichia sennetsu]
Rickettsioses unspecified
ICD 11 Code for Rickettsioses unspecified
1C3Z Rickettsioses unspecified
ICD 10 Code for Rickettsioses unspecified
A79.9 Rickettsiosis unspecified
- Rickettsial infection NOS
Campylobacteriosis
Definition of Campylobacteriosis: Campylobacteriosis is caused by Campylobacter bacteria (curved or spiral, motile, non–spore-forming, Gram-negative rods). The disease is usually caused by C. jejuni, a spiral and comma shaped bacterium normally found in cattle, swine, and birds, where it is nonpathogenic, but the illness can also be caused by C. coli (also found in cattle, swine, and birds), C. upsaliensis (found in cats and dogs) and C. lari (present in seabirds in particular).
ICD 11 Code for Campylobacteriosis
1C40 Campylobacteriosis
Bacterial infection of unspecified site
ICD 11 Code for Bacterial infection of unspecified site
1C41 Bacterial infection of unspecified site
Exclusions:
- meningococcal infection NOS
- chlamydial infection NOS
- rickettsial infection NOS
- spirochaetal infection NOS
Coded Elsewhere:
- Acute meningococcaemia
- Disseminated gonococcal infection
Melioidosis
Definition of Melioidosis: A disease caused by the saprophytic environmental gram-negative bacterium Burkholderia pseudomallei which is found in soil or water in humid tropical regions of the world, especially South-East Asia and northern Australia. It has protean manifestations ranging from fulminant septicaemia with fatal outcome to chronic low grade infection.
ICD 11 Code for Melioidosis
1C42 Melioidosis
ICD 10 Code for Melioidosis
A24 Glanders and melioidosis
A24.0 Glanders
- Infection due to Pseudomonas mallei
- Infection due to Burkholderia mallei
- Malleus
A24.1 Acute and fulminating melioidosis
Melioidosis:
- pneumonia
- sepsis
A24.2 Subacute and chronic melioidosis
A24.3 Other melioidosis
A24.4 Melioidosis unspecified
- Infection due to Pseudomonas pseudomallei NOS
- Infection due to Burkholderia pseudomallei NOS
- Whitmore disease
Actinomycetoma
Definition of Actinomycetoma: Actinomycetoma is a chronic progressive subcutaneous infection caused by implantation of aerobic branching actinomycetes through a skin wound. These organisms are filamentous bacteria which live as saprophytes in soil or on plants; the commonest infecting agents are Nocardia brasiliensis, Actinomadura madurae and Streptomyces somaliensis. The earliest stage of infection is a firm painless nodule but with time the whole area becomes hard and swollen with multiple papules, pustules and draining sinuses on the skin surface. Extension to underlying bones and joints can result in gross deformity.
ICD 11 Code for Actinomycetoma
1C43 Actinomycetoma
Inclusions:
- Mycetoma due to filamentous bacteria
Exclusions:
- Eumycetoma
ICD 10 Code for Actinomycetoma
B47.1 Actinomycetoma
B47.9 Mycetoma unspecified
- Madura foot NOS
Non-pyogenic bacterial infections of the skin
Definition of Non-pyogenic bacterial infections of the skin: Skin infection by bacteria which do not characteristically induce pus formation.
ICD 11 Code for Non-pyogenic bacterial infections of the skin
1C44 Non-pyogenic bacterial infections of the skin
Other specified bacterial diseases
ICD 11 Code for other specified bacterial diseases
1C4Y Other specified bacterial diseases
ICD 10 Code for other specified bacterial diseases
A30-A49 Other bacterial diseases
A30 Leprosy [Hansen disease]
Inclusions:
- infection due to Mycobacterium leprae
Exclusions:
- sequelae of leprosy
A30.0 Indeterminate leprosy
- I leprosy
A30.1 Tuberculoid leprosy
- TT leprosy
A30.2 Borderline tuberculoid leprosy
- BT leprosy
A30.3 Borderline leprosy
- BB leprosy
A30.4 Borderline lepromatous leprosy
- BL leprosy
A30.5 Lepromatous leprosy
- LL leprosy
A30.8 Other forms of leprosy
A30.9 Leprosy unspecified
Unspecified bacterial disease
ICD 11 Code for Unspecified bacterial disease
1C4Z Unspecified bacterial disease