AA02 Malignant otitis externa International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2026-01 Malignant otitis externa is a rare life-threatening infective complication of otitis externa. It is due in the majority of cases to Pseudomonas aeruginosa. Organisms penetrate from the external ear canal into the surrounding deeper tissues resulting in osteomyelitis of the temporal bone and risks of damage to adjacent cranial nerves and septic thrombo-emboli to the brain. Advanced age, uncontrolled diabetes mellitus and immunosuppression are risk factors.
postcoordination Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.
Laterality - only one may be selected [select] XK9J Bilateral XK8G Left XK9K Right XK70 Unilateral, unspecified Specific anatomy - multiple selections are allowed [select] XA6ZY6 External Ear XA4E71 Pinna XA3UC1 External auditory canal XA9E26 Skin of auricle XA6B58 Helix of pinna XA7V14 Antihelix XA8W55 Concha of pinna XA3RC6 Triangular fossa of pinna XA2N71 Tragus of pinna XA5VK5 Intertragic notch of pinna XA0TW7 Earlobe XA7RR9 Antitragus of pinna XA3S47 Posterior surface of pinna XA4DV9 Retroauricular sulcus XA5GS5 External auditory meatus XA5K66 Ceruminal gland XA9A86 Crus of helix XA9M10 Apex of helix XA7AB8 Spine of helix XA1BZ8 Tail of helix XA96Q7 Crura of antihelix XA5LW2 Scaphoid fossa of pinna XA5KM5 Cymba conchae XA8D58 Conchal bowl of pinna XA6NU1 Antihelical fossa XA6KW8 Eminence of concha XA0H47 Eminence of scapha XA8VK6 Eminence of triangular fossa Infectious agent - multiple selections are allowed [select] XN74M Bacteria XN5PZ Gram Negative Bacteria XN2QM Gram Positive Bacteria XN87X Bacteria, neither Gram Negative nor Gram Positive XN25B Acinetobacter XN048 Anaplasma XN3NJ Bartonella XN9W3 Bordetella XN22N Brucella XN01M Burkholderia XN7US Campylobacter XN27H Chlamydia XN0FZ Citrobacter XN5H6 Coxiella XN9M7 Ehrlichia XN1VF Eikenella XN9W5 Enterobacter XN4WC Escherichia XN94G Francisella XN4LF Fusobacterium XN2HK Haemophilus XN6XR Helicobacter XN620 Klebsiella XN7EJ Kingella kingae XN3SZ Legionella XN9RA Leptospira XN2JD Leptotrichia XN90V Moraxella XN8G6 Morganella XN1W2 Mycoplasma XN69X Neisseria XN8ST Neorickettsia XN3U2 Pasteurella XN1ZM Pleisiomonas XN3BS Proteus XN7R2 Providencia XN022 Pseudomonas XN4YH Rickettsia XN0QE Salmonellae XN71D Serratia spp XN7HG Shigella spp XN23Z Spirillum XN708 Streptobacillus XN1L0 Stenotrophomonas XN36C Treponema XN1R2 Ureaplasma XN8RL Vibrio XN4QG Yersinia XN65H Bacteroides XN9EB Cronobacter XN9AS Brevundimonas XN1J7 Aeromonas XN4X0 Herbaspirillum XN706 Elizabethkingia XN15X Ralstonia XN3NY Raoultella XN6PA Orientia XN3G0 Actinomyces XN8EK Actinomycetales XN9ZE Bacillus XN33F Bifidobacterium XN198 Clostridium XN3NT Corynebacterium XN1F7 Enterococcus XN494 Erysipelothrix XN4D1 Listeria XN20K Nocardia XN5M7 Propionibacterium XN9ZG Staphylococcus XN3NM Streptococcus XN7PP Tropheryma XN0SE Clostridioides difficile XN2DX Borrelia XN2NR Mycobacterium XN8LS Acinetobacter baumannii XN5YN Acinetobacter junii XN0DS Acinetobacter nosocomialis XN2QH Acinetobacter pittii XN24X Acinetobacter calcoaceticus XN4JQ Acinetobacter haemolyticus XN38M Acinetobacter lwoffii XN1MH Anaplasma phagocytophilum XN0W4 Bartonella bacilliformis XN3F6 Bartonella clarridgeiae XN5J5 Bartonella elizabethae XN5SH Bartonella grahamii XN862 Bartonella henselae XN302 Bartonella koehlerae XN14D Bartonella quintana XN43H Bartonella rochalimae XN6KD Bartonella vinsonii XN94Y Bartonella washoensis XN173 Bordetella bronchiseptica XN23B Bordetella pertussis XN7LQ Bordetella parapertussis XN7A8 Brucella abortus XN84J Brucella canis XN7ZW Brucella melitensis XN3UP Brucella suis XN351 Burkholderia gladioli XN6Y3 Burkholderia mallei XN3LD Burkholderia pseudomallei XN335 Burkholderia cepacia complex XN0BA Campylobacter coli XN3EN Campylobacter fetus XN4Q5 Campylobacter jejuni XN1UQ Campylobacter lari XN712 Campylobacter upsaliensis XN9EE Chlamydia pneumoniae XN4S7 Chlamydia psittaci XN4Q4 Chlamydia trachomatis XN0M3 Citrobacter freundii XN42U Citrobacter amalonaticus XN19E Citrobacter braakii XN1AY Citrobacter diversus XN6S0 Citrobacter farmeri XN69N Citrobacter koseri XN0QS Coxiella burnetii XN293 Ehrlichia canis XN4GW Ehrlichia chaffeensis XN2YH Ehrlichia ewingii XN3YM Enterobacter cloacae XN319 Enterobacter gergoviae XN90L Enterobacter hormaechei XN8A2 Enterobacter intermedius XN762 Enterobacter agglomerans XN19N Enterobacter amnigenus XN1DZ Enterobacter asburiae XN15Z Enterobacter cancerogenus XN6P4 Escherichia coli XN6MP Escherichia hermannii XN2S7 Pseudescherichia vulneris XN6HJ Francisella philomiragia XN0BX Francisella tularensis XN7B1 Fusobacterium necrophorum XN5MA Fusobacterium novum XN4P8 Fusobacterium nucleatum XN911 Fusobacterium polymorphum XN6MB Haemophilus ducreyi XN1P6 Haemophilus influenzae XN0YS Helicobacter bilis XN0TD Helicobacter bizzozeronii XN42L Helicobacter canis XN354 Helicobacter cinaedi XN6JN Helicobacter felis XN9X3 Helicobacter ganmani XN8PN Helicobacter hepaticus XN3DY Helicobacter pylori XN9D7 Helicobacter salomonis XN079 Helicobacter suis XN027 Klebsiella granulomatis XN7WL Klebsiella oxytoca XN741 Klebsiella pneumoniae XN4FS Klebsiella aerogenes XN2P8 Klebsiella ozaenae XN6K2 Klebsiella planticola XN59X Klebsiella rhinoscleromatis XN5R6 Legionella anisa XN14Z Legionella longbeachae XN9YS Legionella pneumophila XN63J Legionella birminghamensis XN6VB Legionella bozemanii XN9TA Legionella brunensis XN9MB Legionella cincinnatiensis XN8QA Legionella clemsonensis XN94J Legionella donaldsonii XN69J Legionella dumoffii XN089 Legionella cardiaca XN9H3 Legionella cherrii XN26N Legionella erythra XN31H Legionella feeleii XN53C Legionella gormanii XN751 Legionella hackeliae XN5NX Legionella jamsestownensis XN2KM Legionella jordanis XN2U6 Legionella lansingensis XN3D0 Legionella londiniensis XN2NN Legionella lytica XN3CK Legionella macaechernii XN5UY Legionella micdadei XN9WL Legionella nagasakiensis XN8V0 Legionella oakridgensis XN3XF Legionella parisiensis XN5V4 Legionella rubrilucens XN0U5 Legionella sainthelensi XN138 Legionella steelei XN4R0 Legionella tucsonensis XN36P Legionella wadsworthii XN18D Legionella waltersii XN4K9 Legionella worsleiensis XN1R8 Leptospira alexanderi XN7D2 Leptospira borgpetersenii XN9K9 Leptospira broomii XN5HC Leptospira fainei XN20F Leptospira inadai XN78P Leptospira interrogans XN110 Leptospira kirschneri XN481 Leptospira kmetyi XN6NU Leptospira licerasiae XN4KP Leptospira noguchii XN01X Leptospira santarosai XN4FL Leptospira species XN4E7 Leptospira weilii XN77E Leptospira wolffii XN5UB Leptospira alstonii XN734 Leptotrichia buccalis XN4GY Leptotrichia goodfellowii XN0SF Leptotrichia hofstadii XN4SA Leptotrichia hongkongensis XN7NF Leptotrichia shahii XN6QY Leptotrichia trevisanii XN5SN Leptotrichia wadei XN5W4 Morganella morganii XN3NR Mycoplasma fermentans XN9UG Mycoplasma genitalium XN674 Mycoplasma hyorhinis XN3AD Mycoplasma penetrans XN4NV Mycoplasma pneumoniae XN59Y Neisseria gonorrhoeae XN1DV Neisseria meningitidis XN7C8 Neorickettsia sennetsu XN30D Pasteurella multocida XN9ZF Proteus mirabilis XN9DS Proteus morganii XN7PE Proteus penneri XN118 Proteus vulgaris XN2PG Providencia rettgeri XN64G Providencia stuartii XN77S Providencia rustigianii XN0KL Providencia alcalifaciens XN5L6 Pseudomonas aeruginosa XN3JP Pseudomonas oryzihabitans XN52E Pseudomonas mallei XN8J7 Pseudomonas plecoglossicida XN8AA Pseudomonas pseudomallei XN9YP Rickettsia africae XN7WV Rickettsia akari XN23V Rickettsia australis XN8U4 Rickettsia conorii XN6W8 Rickettsia felis XN9NE Rickettsia helvetica XN5NY Rickettsia hoogstraalii XN3XV Rickettsia japonica XN8SY Rickettsia prowazekii XN33Q Rickettsia rickettsii XN1N6 Rickettsia sibirica XN2AR Rickettsia typhi XN5VC Salmonella enterica subspecies enterica XN2DW Salmonella enterica subspecies bongori XN1U2 Salmonella enterica subspecies salamae XN336 Salmonella enterica subsecies arizonae XN02B Salmonella enterica subspecies diarizonae XN4NF Salmonelaa enterica subspecies houtenae XN7TM Salmonella enterica subspecies indica XN2V6 Serratia marcescens XN0M8 Serratia odorifera XN88A Serratia plymuthica XN54N Serratia rubidaea XN1RU Serratia liquefaciens XN7Y2 Shigella flexneri XN8RN Shigella boydii XN285 Shigella dysenteriae XN9M9 Shigella sonnei XN0J7 Spirillum minus XN78V Spirillum pulli XN17K Spirillum volutans XN96A Spirillum winogradskyi XN91U Streptobacillus moniliformis XN0AD Stenotrophomonas maltophilia XN76V Treponema carateum XN711 Treponema pallidum XN7N1 Vibrio cholerae XN1AA Vibrio parahaemolyticus XN44G Vibrio vulnificus XN91V Yersinia enterocolitica XN6QS Yersinia pestis XN6K8 Yersinia pseudotuberculosis XN2R7 Bacteroides fragilis XN2YF Cronobacter sakazakii XN8W4 Brevundimonas diminuta XN2F0 Brevundimonas vesicularis XN40Z Aeromonas hydrophila XN0XY Aeromonas caviae XN7QA Herbaspirillum huttiense XN6BA Elizabethkingia anophelis XN6C4 Elizabethkingia meningoseptica XN6AH Ralstonia picketti XN694 Ralstonia mannitolilytica XN9VM Ralstonia insidiosa XN0MD Raoultella ornithinolytica XN675 Orientia tsutsugamushi XN0GV Actinomyces gerencseriae XN15T Actinomyces israelii XN8HN Actinomyces species XN8P7 Actinomadura XN94F Bacillus anthracis XN8PY Bacillus cereus XN0PT Bifidobacterium dentium XN2JN Clostridium botulinum XN7J5 Clostridium perfringens XN4LP Clostridium sordellii XN5NQ Clostridium tetani XN1C8 Clostridium baratii XN8TK Clostridium butyricum XN9N1 Corynebacterium diphtheriae XN78S Corynebacterium minutissimum XN5EG Corynebacterium pseudotuberculosis XN752 Corynebacterium striatum XN3MP Corynebacterium tenuis XN17W Corynebacterum ulcerans XN2H4 Enterococcus faecalis XN51E Enterococcus faecium XN0DT Enterococcus avium XN3XY Enterococcus casseliflavus XN724 Enterococcus durans XN8BQ Enterococcus gallinarum XN4ZZ Enterococcus mundtii XN3QK Enterococcus raffinosus XN4FJ Erysipelothrix rhusiopathiae XN39H Listeria ivanovii XN602 Listeria monocytogenes XN2BK Nocardia asteroides XN1LG Nocardia brasiliensis XN27L Propionibacterium propionicus XN6BM Staphylococcus aureus XN9LM Coagulase-negative Staphylococci XN6B7 Staphylococcus saprophyticus XN3EV Staphylococcus intermedius XN71F Staphylococcus hyicus XN1V3 Alpha-hemolytic Streptococcus XN1AF Beta-haemolytic Streptococcus XN2NS Gamma-haemolytic Streptococcus XN5KC Streptococcus, group D XN8BJ Group E Streptococcus XN6BB Group F Streptococcus XN40Y Group H Streptococcus XN5P4 Tropheryma whipplei XN7GL Borrelia afzelii XN13C Borrelia burgdorferi XN3F1 Borrelia crocidurae XN4VZ Borrelia garinii XN3PD Borrelia hermsii XN2P3 Borrelia miyamotoi XN6VH Borrelia parkeri XN5R4 Borrelia recurrentis XN140 Borrelia vincentii XN4A1 Borrelia duttoni XN8WW Borrelia hispanica XN7MK Borrelia persica XN8ZT Borrelia turicatae XN6YB Mycobacterium africanum XN8AB Mycobacterium bovis XN8N3 Mycobacterium canettii XN4MR Mycobacterium caprae XN9H9 Mycobacterium colombiense XN8FC Mycobacterium indicus pranii XN5TS Mycobacterium leprae XN3T2 Mycobacterium microti XN7H2 Mycobacterium pinnipedii XN1N2 Mycobacterium tuberculosis XN96Q Non-tuberculous mycobacterium XN06D Burkholderia stabilis XN0ZW Burkholderia anthina XN15B Burkholderia contaminans XN5CF Chlamydia trachomatis L serovars XN656 Chlamydia trachomatis A-C serovars XN332 Chlamydia trachomatis D-K serovars XN88S Enteroinvasive Escherichia coli XN2U0 Enteropathogenic Escherichia coli XN81Z Enterotoxigenic Escherichia coli XN108 Shiga toxin-producing Escherichia coli XN55V Enteroaggregative Escherichia coli XN4ZY Francisella novicida XN1BX Haemophilus influenzae aegyptius XN0FG Haemophilus influenzae type B XN8XZ Morganella morganii subsp. morganii XN9KW Morganella morganii subsp. sibonii XN3CR Neisseria meningitidis serogroup A XN8FU Neisseria meningitidis serogroup B XN7EM Neisseria meningitidis serogroup C XN03X Neisseria meningitidis serogroup W XN0C2 Neisseria meningitidis serogroup X XN5H0 Neisseria meningitidis serogroup Y XN0UV Salmonella Paratyphi XN4AM Salmonella Typhi XN7U5 Salmonella Panama XN97K Salmonella Weltevreden XN13V Salmonella Wandsworth XN3DF Salmonella Virchow XN4QY Salmonella Give XN3AE Salmonella Gaminara XN0N5 Salmonella Agona XN5SM Salmonella Kiambu XN3TU Salmonella Thompson XN15L Salmonella Typhimurium XN8SF Salmonella Saintpaul XN2MU Salmonella Stanley XN0LX Salmonella Strathcona XN5WE Salmonella Senftenberg XN291 Salmonella Tennessee XN87G Salmonella Newport XN5TM Salmonella Hartford XN1QX Salmonella Oranienburg XN2SZ Salmonella Poona XN36N Salmonella Kedougou XN5LV Salmonella Litchfield XN4LH Salmonella Mbandaka XN1FK Salmonella Montevideo XN3UH Salmonella Mikawasima XN7QM Salmonella Concord XN8RF Salmonella Cubana XN39C Salmonella Infantis XN6JL Salmonella Havana XN1W7 Salmonella Enteritidis XN0Q7 Salmonella Bareilly XN4MS Salmonella Braenderup XN3KA Salmonella Brandenburg XN0NU Salmonella Choleraesuis XN910 Salmonella Bredeney XN52S Salmonella Nchanga XN8F6 Salmonella Lille XN7EC Salmonella Sandiego XN2DJ Salmonella enterica subspecies enterica serovar 4,5,12:i:- XN7PN Salmonella enterica subspecies enterica serovar 4,[5],12:i:- XN4FV Salmonella Abony XN79R Salmonella Anatum XN10X Salmonella Bovismorbificans XN59R Salmonella Rissen XN6V6 Salmonella Schwarzengrund XN41R Salmonella Javiana XN5NG Salmonella Kentucky XN60C Salmonella Kottbus XN44N Salmonella Chester XN7R7 Salmonella Coeln XN355 Salmonella Corvallis XN35B Salmonella Derby XN250 Salmonella Dublin XN909 Salmonella Goldcoast XN0RU Salmonella Hadar XN5H4 Salmonella Haifa XN9AT Salmonella Heidelberg XN2QX Salmonella Indiana XN3H1 Salmonella Livingstone XN5Z3 Salmonella London XN52U Salmonella Muenster XN72V Salmonella Muenchen XN9ME Salmonella Napoli XN82M Salmonella Ohio XN6AL Treponema pallidum carateum XN35Z Treponema pallidum endemicum XN030 Treponema pallidum pallidum XN46P Treponema pallidum pertenue XN8P1 Vibrio cholerae O1, biovar cholerae XN62R Vibrio cholerae O1, biovar eltor XN8KD Vibrio cholerae O139 XN4B5 Panton-Valentine Leukocidin–producing Staphylococcus aureus XN0PR Staphylococcus auricularis XN0H1 Staphylococcus capitis XN99G Staphylococcus caprae XN95B Staphylococcus cohnii XN8KJ Staphylococcus epidermidis XN2GD Staphylococcus haemolyticus XN09P Staphylococcus leei XN4N7 Staphylococcus lugdunensis XN8WC Staphylococcus pasteuri XN6FH Staphylococcus pettenkoferi XN9X8 Staphylococcus schleiferi XN2HN Staphylococcus sciuri XN7RE Staphylococcus simulans XN4C9 Staphylococcus warneri XN7TQ Staphylococcus xylosus XN567 Staphylococcus hominis XN3PW Streptococcus pneumoniae XN9LA Streptococcus viridans XN6LP Streptococcus, group A XN2M1 Streptococcus, group B XN518 Group C Streptococcus XN84N Group G Streptococcus XN6KJ Streptococcus bovis XN625 Streptococcus equinus XN39R Streptococcus anginosus XN3L7 Streptococcus canis XN0FR Streptococcus constellatus XN4PA Streptococcus iniae XN67P Streptococcus intermedius XN5BP Streptococcus mitis XN2RH Streptococcus mutans XN4B2 Streptococcus oralis XN18T Streptococcus parasanguinis XN58W Streptococcus peroris XN6KE Streptococcus pseudopneumoniae XN5DB Streptococcus ratti XN3BQ Streptococcus salivarius XN9FP Streptococcus sanguinis XN0XM Streptococcus sobrinus XN5SE Streptococcus suis XN4LM Streptococcus thermophilus XN1TV Streptococcus uberis XN0Z2 Streptococcus vestibularis XN3L9 Mycobacterium kansasii XN5C1 Mycobacterium malmoense XN53D Mycobacterium xenopi XN6PL Mycobacterium asiaticum XN4MW Mycobacterium simiae XN975 Mycobacterium szulgai XN74T Mycobacterium scrofulaceum XN7YR Mycobacterium haemophilum XN8ZX Mycobacterium fortuitum XN8RB Mycobacterium marinum XN9M0 Mycobacterium ulcerans XN3D3 Mycobacterium chelonei XN97H Mycobacterium avium complex XN4TQ Mycobacterium abscessus complex XN44M Mycobacterium chelonae XN5NF Enterohaemorrhagic Escherichia coli XN1K5 Salmonella paratyphi A XN322 Salmonella paratyphi B XN5TR Salmonella paratyphi C XN2V3 Salmonella monophasic Typhimurium 1.4.[5].12:i:- XN7YG Streptococcus pyogenes XN0KC Streptococcus agalactiae XN0TY Streptococcus zooepidemicus XN8UN Streptococcus dysgalactiae XN5LZ Mycobacterium avium XN3ZQ Mycobacterium intracellulare XN077 Mycobacterium chimaera XN66U Mycobacterium marseillense XN1LH Mycobacterium timonense XN92G Mycobacterium bouchedurhonense XN7V4 Mycobacterium abscessus subsp. abscessus XN5SW Mycobacterium abscessus subsp. massiliense XN017 Mycobacterium abscessus subsp. bolletii XN7W5 Salmonella Paratyphi B Variant L(+) tartrate + (Java) XN8FF Mycobacterium avium hominissuis XN5NW Mycobacterium avium paratuberculosis XN145 Mycobacterium avium silvaticum
synonyms Malignant otitis externa Necrotising otitis externa Pseudomonas aeruginosa osteomyelitis of the temporal bone
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