ICD-10 Code for Fistula

The default ICD-10-CM 2027 code for fistula (cutaneous) is L98.8 – Other specified disorders of the skin and subcutaneous tissue. More specific codes depend on the details documented, as listed in the official index (135 codes, 118 billable).

Main code: L98.8 – Other specified disorders of the skin and subcutaneous tissue
Billable: Yes

Index entries for Fistula

abdomen (wall) – K63.2
- bladder – N32.2
- intestine NEC – K63.2
- ureter – N28.89
- uterus – N82.5
abdominorectal – K63.2
abdominosigmoidal – K63.2
abdominothoracic – J86.0
abdominouterine – N82.5
- congenital – Q51.7
abdominovesical – N32.2
accessory sinuses – see Sinusitis
actinomycotic – see Actinomycosis
alveolar antrum – see Sinusitis, maxillary
alveolar process – K04.6
anorectal (infectional) – K60.50
- complex – K60.529
  - chronic – K60.522
  - initial – K60.521
  - new – K60.521
  - occurring following complete healing – K60.523
  - persistent – K60.522
  - recurrent – K60.523
- extrasphincteric – K60.52- (header)
- high intersphincteric – K60.52- (header)
- low intersphincteric – K60.51- (header)
- simple – K60.519
  - chronic – K60.512
  - initial – K60.511
  - new – K60.511
  - occurring following complete healing – K60.513
  - persistent – K60.512
  - recurrent – K60.513
- superficial – K60.51- (header)
- suprasphincteric – K60.52- (header)
- transsphincteric – K60.52- (header)
antrobuccal – see Sinusitis, maxillary
antrum – see Sinusitis, maxillary
anus, anal (recurrent) (infectional) – K60.30
- complex – K60.329
  - chronic – K60.322
  - initial – K60.321
  - new – K60.321
  - occurring following complete healing – K60.323
  - persistent – K60.322
  - recurrent – K60.323
- congenital – Q43.6
  - with absence, atresia and stenosis – Q42.2
- extrasphincteric – K60.32- (header)
- high intersphincteric – K60.32- (header)
- low intersphincteric – K60.31- (header)
- simple – K60.319
  - chronic – K60.312
  - initial – K60.311
  - new – K60.311
  - occurring following complete healing – K60.313
  - persistent – K60.312
  - recurrent – K60.313
- superficial – K60.31- (header)
- suprasphincteric – K60.32- (header)
- transsphincteric – K60.32- (header)
- tuberculous – A18.32
aorta-duodenal – I77.2
appendix, appendicular – K38.3
arteriovenous (acquired) (nonruptured) – I77.0
- brain – I67.1
  - congenital – Q28.2
    - ruptured – see Fistula, arteriovenous, brain, ruptured
  - ruptured – I60.8
    - intracerebral – I61.8
    - intraparenchymal – I61.8
    - intraventricular – I61.5
    - subarachnoid – I60.8
- cerebral – see Fistula, arteriovenous, brain
- congenital (peripheral) – see also Malformation, arteriovenous
  - brain – Q28.2
    - ruptured – see Fistula, arteriovenous, brain, ruptured
  - coronary – Q24.5
  - pulmonary – Q25.72
- coronary – I25.41
  - congenital – Q24.5
- pulmonary – I28.0
  - congenital – Q25.72
- surgically created (for dialysis) – Z99.2
  - complication – see Complication, arteriovenous, fistula, surgically created
- traumatic – see Injury, blood vessel
artery – I77.2
aural (mastoid) – see Mastoiditis, chronic
auricle – see also Disorder, pinna, specified type NEC
- congenital – Q18.1
Bartholin's gland – N82.8
bile duct (common) (hepatic) – K83.3
- with calculus, stones – K83.3 – see also Calculus, bile duct
biliary (tract) – see Fistula, bile duct
bladder (sphincter) – N32.2 – see also Fistula, vesico-
- into seminal vesicle – N32.2
bone – see also Disorder, bone, specified type NEC
- with osteomyelitis, chronic – see Osteomyelitis, chronic, with draining sinus
brain – G93.89
- arteriovenous (acquired) – I67.1 – see also Fistula, arteriovenous, brain
  - congenital – Q28.2
branchial (cleft) – Q18.0
branchiogenous – Q18.0
breast – N61.0
- puerperal, postpartum or gestational, due to mastitis (purulent) – see Mastitis, obstetric, purulent
bronchial – J86.0
bronchocutaneous, bronchomediastinal, bronchopleural, bronchopleuromediastinal (infective) – J86.0
- tuberculous NEC – A15.5
bronchoesophageal – J86.0
- congenital – Q39.2
  - with atresia of esophagus – Q39.1
bronchovisceral – J86.0
buccal cavity (infective) – K12.2
cecosigmoidal – K63.2
cecum – K63.2
cerebrospinal (fluid) – G96.08
cervical, lateral – Q18.1
cervicoaural – Q18.1
cervicosigmoidal – N82.4
cervicovesical – N82.1
cervix – N82.8
chest (wall) – J86.0
cholecystenteric – see Fistula, gallbladder
cholecystocolic – see Fistula, gallbladder
cholecystocolonic – see Fistula, gallbladder
cholecystoduodenal – see Fistula, gallbladder
cholecystogastric – see Fistula, gallbladder
cholecystointestinal – see Fistula, gallbladder
choledochoduodenal – see Fistula, bile duct
cholocolic – K82.3
coccyx – see Sinus, pilonidal
colon – K63.2
colostomy – K94.09
colovesical – N32.1
common duct – see Fistula, bile duct
congenital, site not listed – see Anomaly, by site
coronary, arteriovenous – I25.41
- congenital – Q24.5
costal region – J86.0
cul-de-sac, Douglas' – N82.8
cystic duct – see also Fistula, gallbladder
- congenital – Q44.5
dental – K04.6
diaphragm – J86.0
duodenum – K31.6
ear (external) (canal) – see Disorder, ear, external, specified type NEC
enterocolic – K63.2
enterocutaneous – K63.2
enterouterine – N82.4
- congenital – Q51.7
enterovaginal – N82.4
- congenital – Q52.2
- large intestine – N82.3
- small intestine – N82.2
enterovesical – N32.1
epididymis – N50.89
- tuberculous – A18.15
esophagobronchial – J86.0
- congenital – Q39.2
  - with atresia of esophagus – Q39.1
esophagocutaneous – K22.89
esophagopleural-cutaneous – J86.0
esophagotracheal – J86.0
- congenital – Q39.2
  - with atresia of esophagus – Q39.1
esophagus – K22.89
- congenital – Q39.2
  - with atresia of esophagus – Q39.1
ethmoid – see Sinusitis, ethmoidal
eyeball (cornea) (sclera) – see Disorder, globe, hypotony
eyelid – H01.8- (header)
fallopian tube, external – N82.5
fecal – K63.2
- congenital – Q43.6
from periapical abscess – K04.6
frontal sinus – see Sinusitis, frontal
gallbladder – K82.3
- with calculus, cholelithiasis, stones – see Calculus, gallbladder
gastric – K31.6
gastrocolic – K31.6
- congenital – Q40.2
- tuberculous – A18.32
gastroenterocolic – K31.6
gastroesophageal – K31.6
gastrojejunal – K31.6
gastrojejunocolic – K31.6
genital tract (female) – N82.9
- specified NEC – N82.8
- to intestine NEC – N82.4
- to skin – N82.5
hepatic artery-portal vein, congenital – Q26.6
hepatopleural – J86.0
hepatopulmonary – J86.0
ileorectal or ileosigmoidal – K63.2
ileovaginal – N82.2
ileovesical – N32.1
ileum – K63.2
in ano – K60.30
- tuberculous – A18.32
inner ear (labyrinth)
intestine NEC – K63.2
intestinocolonic (abdominal) – K63.2
intestinoureteral – N28.89
intestinouterine – N82.4
intestinovaginal – N82.4
- large intestine – N82.3
- small intestine – N82.2
intestinovesical – N32.1
ischiorectal (fossa) – K61.39
jejunum – K63.2
joint – M25.10
- ankle – M25.17- (header)
- elbow – M25.12- (header)
- foot joint – M25.17- (header)
- hand joint – M25.14- (header)
- hip – M25.15- (header)
- knee – M25.16- (header)
- shoulder – M25.11- (header)
- specified joint NEC – M25.18
- tuberculous – see Tuberculosis, joint
- vertebrae – M25.18
- wrist – M25.13- (header)
kidney – N28.89
labium (majus) (minus) – N82.8
labyrinth
lacrimal (gland) (sac) – H04.61- (header)
lacrimonasal duct – see Fistula, lacrimal
laryngotracheal, congenital – Q34.8
larynx – J38.7
lip – K13.0
- congenital – Q38.0
lumbar, tuberculous – A18.01
lung – J86.0
lymphatic – I89.8
mammary (gland) – N61.0
mastoid (process) (region) – see Mastoiditis, chronic
maxillary – J32.0
medial, face and neck – Q18.8
mediastinal – J86.0
mediastinobronchial – J86.0
mediastinocutaneous – J86.0
middle ear
mouth – K12.2
nasal – J34.89
- sinus – see Sinusitis
nasopharynx – J39.2
nipple – N64.0
nose – J34.89
oral (cutaneous) – K12.2
- maxillary – J32.0
- nasal (with cleft palate) – see Cleft, palate
orbit, orbital – see Disorder, orbit, specified type NEC
oroantral – J32.0
oviduct, external – N82.5
palate (hard) – M27.8
pancreatic – K86.89
pancreaticoduodenal – K86.89
parotid (gland) – K11.4
- region – K12.2
penis – N48.89
perianal – K60.30
pericardium (pleura) (sac) – see Pericarditis
pericecal – K63.2
perineorectal – K60.40
perineosigmoidal – K63.2
perineum, perineal (with urethral involvement) – N36.0
- tuberculous – A18.13
- ureter – N28.89
perirectal – K60.40
- tuberculous – A18.32
peritoneum – K65.9
pharyngoesophageal – J39.2
pharynx – J39.2
- branchial cleft (congenital) – Q18.0
pilonidal (infected) (rectum) – see Sinus, pilonidal
pleura, pleural, pleurocutaneous, pleuroperitoneal – J86.0
- tuberculous NEC – A15.6
pleuropericardial – I31.8
portal vein-hepatic artery, congenital – Q26.6
postauricular – H70.81- (header)
postoperative, persistent – T81.83 (header)
- specified site – see Fistula, by site
preauricular (congenital) – Q18.1
prostate – N42.89
pulmonary – J86.0
- arteriovenous – I28.0
  - congenital – Q25.72
- tuberculous – see Tuberculosis, pulmonary
pulmonoperitoneal – J86.0
rectal (infectional) – K60.40
- complex – K60.429
  - chronic – K60.422
  - initial – K60.421
  - new – K60.421
  - occurring following complete healing – K60.423
  - persistent – K60.422
  - recurrent – K60.423
- extrasphincteric – K60.42- (header)
- high intersphincteric – K60.42- (header)
- low intersphincteric – K60.41- (header)
- simple – K60.419
  - chronic – K60.412
  - initial – K60.411
  - new – K60.411
  - occurring following complete healing – K60.413
  - persistent – K60.412
  - recurrent – K60.413
- superficial – K60.41- (header)
- suprasphincteric – K60.42- (header)
- transsphincteric – K60.42- (header)
rectolabial – N82.4
rectosigmoid (intercommunicating) – K63.2
rectoureteral – N28.89
rectourethral – N36.0
- congenital – Q64.73
rectouterine – N82.4
- congenital – Q51.7
rectovaginal – N82.3
- congenital – Q52.2
- tuberculous – A18.18
rectovesical – N32.1
- congenital – Q64.79
rectovesicovaginal – N82.3
rectovulval – N82.4
- congenital – Q52.79
rectum (to skin) – K60.40
- congenital – Q43.6
  - with absence, atresia and stenosis – Q42.0
- tuberculous – A18.32
renal – N28.89
retroauricular – see Fistula, postauricular
salivary duct or gland (any) – K11.4
- congenital – Q38.4
scrotum (urinary) – N50.89
- tuberculous – A18.15
semicircular canals
sigmoid – K63.2
- to bladder – N32.1
sinus – see Sinusitis
skin – L98.8
- to genital tract (female) – N82.5
splenocolic – D73.89
stercoral – K63.2
stomach – K31.6
sublingual gland – K11.4
submandibular gland – K11.4
submaxillary (gland) – K11.4
- region – K12.2
thoracic – J86.0
- duct – I89.8
thoracoabdominal – J86.0
thoracogastric – J86.0
thoracointestinal – J86.0
thorax – J86.0
thyroglossal duct – Q89.2
thyroid – E07.89
trachea, congenital (external) (internal) – Q32.1
tracheoesophageal – J86.0
- congenital – Q39.2
  - with atresia of esophagus – Q39.1
- following tracheostomy – J95.04
traumatic arteriovenous – see Injury, blood vessel, by site
tuberculous - code by site under Tuberculosis
typhoid – A01.09
umbilicourinary – Q64.8
urachus, congenital – Q64.4
ureter (persistent) – N28.89
ureteroabdominal – N28.89
ureterorectal – N28.89
ureterosigmoido-abdominal – N28.89
ureterovaginal – N82.1
ureterovesical – N32.2
urethra – N36.0
- congenital – Q64.79
- tuberculous – A18.13
urethroperineal – N36.0
urethroperineovesical – N32.2
urethrorectal – N36.0
- congenital – Q64.73
urethroscrotal – N50.89
urethrovaginal – N82.1
urethrovesical – N32.2
urinary (tract) (persistent) (recurrent) – N36.0
uteroabdominal – N82.5
- congenital – Q51.7
uteroenteric, uterointestinal – N82.4
- congenital – Q51.7
uterorectal – N82.4
- congenital – Q51.7
uteroureteric – N82.1
uterourethral – Q51.7
uterovaginal – N82.8
uterovesical – N82.1
- congenital – Q51.7
uterus – N82.8
vagina (postpartal) (wall) – N82.8
vaginocutaneous (postpartal) – N82.5
vaginointestinal NEC – N82.4
- large intestine – N82.3
- small intestine – N82.2
vaginoperineal – N82.5
vasocutaneous, congenital – Q55.7
vesical NEC – N32.2
vesicoabdominal – N32.2
vesicocervicovaginal – N82.1
vesicocolic – N32.1
vesicocutaneous – N32.2
vesicoenteric – N32.1
vesicointestinal – N32.1
vesicometrorectal – N82.4
vesicoperineal – N32.2
vesicorectal – N32.1
- congenital – Q64.79
vesicosigmoidal – N32.1
vesicosigmoidovaginal – N82.3
vesicoureteral – N32.2
vesicoureterovaginal – N82.1
vesicourethral – N32.2
vesicourethrorectal – N32.1
vesicouterine – N82.1
- congenital – Q51.7
vesicovaginal – N82.0
vulvorectal – N82.4
- congenital – Q52.79

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.