Reference tools ICD-10-CM · FY2026 · April / Disease index / Infection, infected, infective(opportunistic) Disease index Infection, infected, infective(opportunistic) Modifiers and references · icd10cm-index-April-1-2026-XML.xml
Infection, infected, infective(opportunistic) B99.9
Infection, infected, infective(opportunistic) with Infection, infected, infective(opportunistic) › with drug resistant organism See: Resistance (to), drug
See also: specific organism
Infection, infected, infective(opportunistic) › with lymphangitis See: Lymphangitis
Infection, infected, infective(opportunistic) › with organ dysfunction(acute) R65.20
Infection, infected, infective(opportunistic) › with › organ dysfunction(acute) with septic shock R65.21
Infection, infected, infective(opportunistic) abscess(skin) - code by site under Abscess Infection, infected, infective(opportunistic) Absidia See: Mucormycosis
Infection, infected, infective(opportunistic) Acanthamoeba See: Acanthamebiasis
Infection, infected, infective(opportunistic) Acanthocheilonema(perstans) (streptocerca) B74.4
Infection, infected, infective(opportunistic) accessory sinus(chronic) See: Sinusitis
Infection, infected, infective(opportunistic) achorion See: Dermatophytosis
Infection, infected, infective(opportunistic) Acinetobacter baumannii, as cause of disease classified elsewhere B96.83
Infection, infected, infective(opportunistic) Acremonium falciforme B47.0
Infection, infected, infective(opportunistic) acromioclavicular M00.9
Infection, infected, infective(opportunistic) Actinobacillus(actinomycetem-comitans) A28.8
Infection, infected, infective(opportunistic) › Actinobacillus(actinomycetem-comitans) mallei A24.0
Infection, infected, infective(opportunistic) › Actinobacillus(actinomycetem-comitans) muris A25.1
Infection, infected, infective(opportunistic) Actinomadura B47.1
Infection, infected, infective(opportunistic) Actinomyces(israelii) A42.9
See also: Actinomycosis
Infection, infected, infective(opportunistic) Actinomycetales See: Actinomycosis
Infection, infected, infective(opportunistic) actinomycotic NOS See: Actinomycosis
Infection, infected, infective(opportunistic) adenoid(and tonsil) J03.90
Infection, infected, infective(opportunistic) › adenoid(and tonsil) chronic J35.02
Infection, infected, infective(opportunistic) adenovirus NEC Infection, infected, infective(opportunistic) › adenovirus NEC as cause of disease classified elsewhere B97.0
Infection, infected, infective(opportunistic) › adenovirus NEC unspecified nature or site B34.0
Infection, infected, infective(opportunistic) aerogenes capsulatus A48.0
Infection, infected, infective(opportunistic) aertrycke See: Infection, salmonella
Infection, infected, infective(opportunistic) alimentary canal NOS See: Enteritis, infectious
Infection, infected, infective(opportunistic) Allescheria boydii B48.2
Infection, infected, infective(opportunistic) Alternaria B48.8
Infection, infected, infective(opportunistic) alveolus, alveolar(process) K04.7
Infection, infected, infective(opportunistic) Ameba, amebic(histolytica) See: Amebiasis
Infection, infected, infective(opportunistic) amniotic fluid, sac or cavity O41.10 -
Infection, infected, infective(opportunistic) › amniotic fluid, sac or cavity chorioamnionitis O41.12 -
Infection, infected, infective(opportunistic) › amniotic fluid, sac or cavity placentitis O41.14 -
Infection, infected, infective(opportunistic) amputation stump(surgical) See: Complication, amputation stump, infection
Infection, infected, infective(opportunistic) Ancylostoma(duodenalis) B76.0
Infection, infected, infective(opportunistic) Anisakiasis, Anisakis larvae B81.0
Infection, infected, infective(opportunistic) anthrax See: Anthrax
Infection, infected, infective(opportunistic) antrum(chronic) See: Sinusitis, maxillary
Infection, infected, infective(opportunistic) anus, anal(papillae) (sphincter) K62.89
Infection, infected, infective(opportunistic) arbovirus(arbor virus) A94
Infection, infected, infective(opportunistic) › arbovirus(arbor virus) specified type NEC A93.8
Infection, infected, infective(opportunistic) artificial insemination N98.0
Infection, infected, infective(opportunistic) Ascaris lumbricoides See: Ascariasis
Infection, infected, infective(opportunistic) Ascomycetes B47.0
Infection, infected, infective(opportunistic) Aspergillus(flavus) (fumigatus) (terreus) See: Aspergillosis
Infection, infected, infective(opportunistic) atypical Infection, infected, infective(opportunistic) › atypical acid-fast(bacilli) See: Mycobacterium, atypical
Infection, infected, infective(opportunistic) › atypical mycobacteria See: Mycobacterium, atypical
Infection, infected, infective(opportunistic) › atypical virus A81.9
Infection, infected, infective(opportunistic) › atypical › virus specified type NEC A81.89
Infection, infected, infective(opportunistic) auditory meatus(external) See: Otitis, externa, infective
Infection, infected, infective(opportunistic) auricle(ear) See: Otitis, externa, infective
Infection, infected, infective(opportunistic) axillary gland(lymph) L04.2
Infection, infected, infective(opportunistic) Bacillus A49.9
Infection, infected, infective(opportunistic) › Bacillus abortus A23.1
Infection, infected, infective(opportunistic) › Bacillus anthracis See: Anthrax
Infection, infected, infective(opportunistic) › Bacillus ducreyi(any location) A57
Infection, infected, infective(opportunistic) › Bacillus Flexner's A03.1
Infection, infected, infective(opportunistic) › Bacillus Friedländer's NEC A49.8
Infection, infected, infective(opportunistic) › Bacillus gas(gangrene) A48.0
Infection, infected, infective(opportunistic) › Bacillus mallei A24.0
Infection, infected, infective(opportunistic) › Bacillus melitensis A23.0
Infection, infected, infective(opportunistic) › Bacillus paratyphoid, paratyphosus A01.4
Infection, infected, infective(opportunistic) › Bacillus › paratyphoid, paratyphosus A A01.1
Infection, infected, infective(opportunistic) › Bacillus › paratyphoid, paratyphosus B A01.2
Infection, infected, infective(opportunistic) › Bacillus › paratyphoid, paratyphosus C A01.3
Infection, infected, infective(opportunistic) › Bacillus Shiga(-Kruse) A03.0
Infection, infected, infective(opportunistic) › Bacillus suipestifer See: Infection, salmonella
Infection, infected, infective(opportunistic) › Bacillus swimming pool A31.1
Infection, infected, infective(opportunistic) › Bacillus typhosa A01.00
Infection, infected, infective(opportunistic) › Bacillus welchii See: Gangrene, gas
Infection, infected, infective(opportunistic) bacterial NOS A49.9
Infection, infected, infective(opportunistic) › bacterial NOS as cause of disease classified elsewhere B96.89
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Acinetobacter baumannii B96.83
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Bacteroides fragilis [B. fragilis] B96.6
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Clostridium perfringens [C. perfringens] B96.7
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Cronobacter(sakazakii) A49.8
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Enterobacter sakazakii B96.89
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Enterococcus B95.2
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Escherichia coli [E. coli] B96.20
See also: Escherichia coli
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Helicobacter pylori [H.pylori] B96.81
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Hemophilus influenzae [H. influenzae] B96.3
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Klebsiella pneumoniae [K. pneumoniae] B96.1
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Mycoplasma pneumoniae [M. pneumoniae] B96.0
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Proteus(mirabilis) (morganii) B96.4
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Pseudomonas(aeruginosa) (mallei) (pseudomallei) B96.5
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Staphylococcus B95.8
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Staphylococcus aureus(methicillin susceptible) (MSSA) B95.61
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Staphylococcus › aureus(methicillin susceptible) (MSSA) methicillin resistant(MRSA) B95.62
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Staphylococcus specified NEC B95.7
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Streptococcus B95.5
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Streptococcus group A B95.0
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Streptococcus group B B95.1
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Streptococcus pneumoniae B95.3
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Streptococcus specified NEC B95.4
Infection, infected, infective(opportunistic) › bacterial NOS › as cause of disease classified elsewhere Vibrio vulnificus B96.82
Infection, infected, infective(opportunistic) › bacterial NOS specified NEC A48.8
Infection, infected, infective(opportunistic) Bacterium Infection, infected, infective(opportunistic) › Bacterium paratyphosum A01.4
Infection, infected, infective(opportunistic) › Bacterium › paratyphosum A A01.1
Infection, infected, infective(opportunistic) › Bacterium › paratyphosum B A01.2
Infection, infected, infective(opportunistic) › Bacterium › paratyphosum C A01.3
Infection, infected, infective(opportunistic) › Bacterium typhosum A01.00
Infection, infected, infective(opportunistic) Bacteroides NEC A49.8
Infection, infected, infective(opportunistic) › Bacteroides NEC fragilis, as cause of disease classified elsewhere B96.6
Infection, infected, infective(opportunistic) Balantidium coli A07.0
Infection, infected, infective(opportunistic) Bartholin's gland N75.8
Infection, infected, infective(opportunistic) Basidiobolus B46.8
Infection, infected, infective(opportunistic) bile duct(common) (hepatic) See: Cholangitis
Infection, infected, infective(opportunistic) bladder See: Cystitis
Infection, infected, infective(opportunistic) Blastomyces, blastomycotic See also: Blastomycosis
Infection, infected, infective(opportunistic) › Blastomyces, blastomycotic brasiliensis See: Paracoccidioidomycosis
Infection, infected, infective(opportunistic) › Blastomyces, blastomycotic dermatitidis See: Blastomycosis
Infection, infected, infective(opportunistic) › Blastomyces, blastomycotic European See: Cryptococcosis
Infection, infected, infective(opportunistic) › Blastomyces, blastomycotic Loboi B48.0
Infection, infected, infective(opportunistic) › Blastomyces, blastomycotic North American B40.9
Infection, infected, infective(opportunistic) › Blastomyces, blastomycotic South American See: Paracoccidioidomycosis
Infection, infected, infective(opportunistic) bleb, postprocedure See: Blebitis
Infection, infected, infective(opportunistic) bone See: Osteomyelitis
Infection, infected, infective(opportunistic) Bordetella See: Whooping cough
Infection, infected, infective(opportunistic) Borrelia bergdorfi A69.20
Infection, infected, infective(opportunistic) brain G04.90
See also: Encephalitis
Infection, infected, infective(opportunistic) › brain membranes See: Meningitis
Infection, infected, infective(opportunistic) › brain septic G06.0
Infection, infected, infective(opportunistic) › brain › septic meninges See: Meningitis, bacterial
Infection, infected, infective(opportunistic) branchial cyst Q18.0
Infection, infected, infective(opportunistic) breast See: Mastitis
Infection, infected, infective(opportunistic) bronchus See: Bronchitis
Infection, infected, infective(opportunistic) Brucella A23.9
Infection, infected, infective(opportunistic) › Brucella abortus A23.1
Infection, infected, infective(opportunistic) › Brucella canis A23.3
Infection, infected, infective(opportunistic) › Brucella melitensis A23.0
Infection, infected, infective(opportunistic) › Brucella mixed A23.8
Infection, infected, infective(opportunistic) › Brucella specified NEC A23.8
Infection, infected, infective(opportunistic) › Brucella suis A23.2
Infection, infected, infective(opportunistic) Brugia(malayi) B74.1
Infection, infected, infective(opportunistic) › Brugia(malayi) timori B74.2
Infection, infected, infective(opportunistic) bursa See: Bursitis, infective
Infection, infected, infective(opportunistic) buttocks(skin) L08.9
Infection, infected, infective(opportunistic) Campylobacter, intestinal A04.5
Infection, infected, infective(opportunistic) › Campylobacter, intestinal as cause of disease classified elsewhere B96.81
Infection, infected, infective(opportunistic) Candida(albicans) (tropicalis) See: Candidiasis
Infection, infected, infective(opportunistic) candiru B88.8
Infection, infected, infective(opportunistic) Capillaria(intestinal) B81.1
Infection, infected, infective(opportunistic) › Capillaria(intestinal) hepatica B83.8
Infection, infected, infective(opportunistic) › Capillaria(intestinal) philippinensis B81.1
Infection, infected, infective(opportunistic) cartilage See: Disorder, cartilage, specified type NEC
Infection, infected, infective(opportunistic) catheter-related bloodstream(CRBSI) T80.211
Infection, infected, infective(opportunistic) cat liver fluke B66.0
Infection, infected, infective(opportunistic) cellulitis - code by site under Cellulitis Infection, infected, infective(opportunistic) central line-associated T80.219
Infection, infected, infective(opportunistic) › central line-associated bloodstream(CLABSI) T80.211
Infection, infected, infective(opportunistic) › central line-associated specified NEC T80.218
Infection, infected, infective(opportunistic) Cephalosporium falciforme B47.0
Infection, infected, infective(opportunistic) cerebrospinal See: Meningitis
Infection, infected, infective(opportunistic) cervical gland(lymph) L04.0
Infection, infected, infective(opportunistic) cervix See: Cervicitis
Infection, infected, infective(opportunistic) cesarean delivery wound(puerperal) O86.00
Infection, infected, infective(opportunistic) cestodes See: Infestation, cestodes
Infection, infected, infective(opportunistic) chest J22
Infection, infected, infective(opportunistic) Chilomastix(intestinal) A07.8
Infection, infected, infective(opportunistic) Chlamydia, chlamydial A74.9
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial anus A56.3
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial genitourinary tract A56.2
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial › genitourinary tract lower A56.00
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial › genitourinary tract specified NEC A56.19
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial lymphogranuloma A55
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial pharynx A56.4
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial psittaci A70
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial rectum A56.3
Infection, infected, infective(opportunistic) › Chlamydia, chlamydial sexually transmitted NEC A56.8
Infection, infected, infective(opportunistic) cholera See: Cholera
Infection, infected, infective(opportunistic) Cladosporium Infection, infected, infective(opportunistic) › Cladosporium bantianum(brain abscess) B43.1
Infection, infected, infective(opportunistic) › Cladosporium carrionii B43.0
Infection, infected, infective(opportunistic) › Cladosporium castellanii B36.1
Infection, infected, infective(opportunistic) › Cladosporium trichoides(brain abscess) B43.1
Infection, infected, infective(opportunistic) › Cladosporium werneckii B36.1
Infection, infected, infective(opportunistic) Clonorchis(sinensis) (liver) B66.1
Infection, infected, infective(opportunistic) Clostridioides Infection, infected, infective(opportunistic) › Clostridioides difficile Infection, infected, infective(opportunistic) › Clostridioides › difficile as cause of disease classified elsewhere B96.89
Infection, infected, infective(opportunistic) › Clostridioides › difficile foodborne(disease) Infection, infected, infective(opportunistic) › Clostridioides › difficile › foodborne(disease) not specified as recurrent A04.72
Infection, infected, infective(opportunistic) › Clostridioides › difficile › foodborne(disease) recurrent A04.71
Infection, infected, infective(opportunistic) › Clostridioides › difficile gas gangrene A48.0
Infection, infected, infective(opportunistic) › Clostridioides › difficile necrotizing enterocolitis Infection, infected, infective(opportunistic) › Clostridioides › difficile › necrotizing enterocolitis not specified as recurrent A04.72
Infection, infected, infective(opportunistic) › Clostridioides › difficile › necrotizing enterocolitis recurrent A04.71
Infection, infected, infective(opportunistic) › Clostridioides › difficile sepsis A41.4
Infection, infected, infective(opportunistic) Clostridium NEC Infection, infected, infective(opportunistic) › Clostridium NEC bifermentans A48.0
Infection, infected, infective(opportunistic) › Clostridium NEC botulinum(food poisoning) A05.1
Infection, infected, infective(opportunistic) › Clostridium NEC › botulinum(food poisoning) infant A48.51
Infection, infected, infective(opportunistic) › Clostridium NEC › botulinum(food poisoning) wound A48.52
Infection, infected, infective(opportunistic) › Clostridium NEC difficile