Hernia, hernial (acquired) (recurrent)  553.9 | 
 |  | 
   | 
   | 
   | 
  with  | 
  gangrene (obstructed)  551.8 | 
   | 
   | 
  hiatal (esophageal) (sliding)  553.3 | 
  with  | 
  gangrene (obstructed)  551.3 | 
   | 
   | 
   | 
  incarcerated (see also Hernia, by site, with obstruction)  552.9 | 
  gangrenous (see also Hernia, by site, with gangrene)  551.9 | 
   | 
  with  | 
   | 
   | 
   | 
  lumbar - see Hernia, lumbar  | 
   | 
  with  | 
   | 
   | 
   | 
  indirect (inguinal) - see Hernia, inguinal  | 
  infantile - see Hernia, inguinal  | 
   | 
  inguinal (direct) (double) (encysted) (external) (funicular) (indirect) (infantile) (internal) (interstitial) (oblique) (scrotal) (sliding)  550.9 | 
  Note41  Use the following fifth-digit subclassification with category 550:                            0          unilateral or unspecified (not specified as recurrent)                          1          unilateral or unspecified, recurrent                          2          bilateral (not specified as recurrent)                          3          bilateral, recurrent 
 | 
  with  | 
  gangrene (obstructed)  550.0 | 
   | 
   | 
   | 
  with  | 
  gangrene (obstructed)  551.8 | 
   | 
   | 
  inguinal - see Hernia, inguinal  | 
   | 
  with  | 
  gangrene (obstructed)  551.9 | 
   | 
   | 
  inguinal - see Hernia, inguinal  | 
  intervertebral cartilage or disc - see Displacement, intervertebral disc  | 
  intestine, intestinal  553.9 | 
  with  | 
  gangrene (obstructed)  551.9 | 
 |  |