Convert to ICD-10-CM: 
777.1 converts approximately to:
- 2015/16 ICD-10-CM P76.0 Meconium plug syndrome
 ICD-9-CM Volume 2 Index entries containing back-references to 
777.1:
- Delay, delayed passage of meconium (newborn) 777.1 passage of meconium (newborn) 777.1
 
- Fecalith (impaction) 560.39  congenital 777.1 congenital 777.1
 
- Ileus (adynamic) (bowel) (colon) (inhibitory) (intestine) (neurogenic) (paralytic) 560.1  meconium 777.1 meconium 777.1
 
- Meconium delayed passage in newborn 777.1 delayed passage in newborn 777.1
  ileus 777.1 ileus 777.1
  obstruction obstruction  fetus or newborn 777.1 fetus or newborn 777.1
 
  plug syndrome (newborn) NEC 777.1 plug syndrome (newborn) NEC 777.1
 
- Obstruction, obstructed, obstructive intestine (mechanical) (neurogenic) (paroxysmal) (postinfectional) (reflex) 560.9 intestine (mechanical) (neurogenic) (paroxysmal) (postinfectional) (reflex) 560.9   with with   adhesions (intestinal) (peritoneal) 560.81 adhesions (intestinal) (peritoneal) 560.81 
   hernia - see also Hernia, by site, with obstruction hernia - see also Hernia, by site, with obstruction    gangrenous - see Hernia, by site, with gangrene gangrenous - see Hernia, by site, with gangrene
 
 
  adynamic (see also Ileus) 560.1 adynamic (see also Ileus) 560.1 
  by gallstone 560.31 by gallstone 560.31 
  congenital or infantile (small) 751.1 congenital or infantile (small) 751.1 
  due to due to
  impaction 560.39 impaction 560.39 
  infantile - see Obstruction, intestine, congenital infantile - see Obstruction, intestine, congenital
  newborn newborn   due to due to    fecaliths 777.1 fecaliths 777.1
    inspissated milk 777.2 inspissated milk 777.2 
    meconium (plug) 777.1 meconium (plug) 777.1
 
   transitory 777.4 transitory 777.4 
 
  specified cause NEC 560.89 specified cause NEC 560.89 
  transitory, newborn 777.4 transitory, newborn 777.4 
  volvulus 560.2 volvulus 560.2 
 
  meconium meconium  fetus or newborn 777.1 fetus or newborn 777.1
  newborn due to fecaliths 777.1 newborn due to fecaliths 777.1
 
 
- Plug meconium (newborn) NEC 777.1 meconium (newborn) NEC 777.1
 
- Syndrome - see also Disease meconium meconium  aspiration 770.12 aspiration 770.12 
  plug (newborn) NEC 777.1 plug (newborn) NEC 777.1