Convert to ICD-10-CM: 
990 converts approximately to:
- 2015/16 ICD-10-CM T66.XXXA Radiation sickness, unspecified, initial encounter
 ICD-9-CM Volume 2 Index entries containing back-references to 
990:
- Complications phototherapy 990 phototherapy 990
  radiation 990 radiation 990
  radiotherapy 990 radiotherapy 990
 
- Effect, adverse NEC cobalt, radioactive (see also Effect, adverse, radioactive substance) 990 cobalt, radioactive (see also Effect, adverse, radioactive substance) 990
  fallout (radioactive) NEC 990 fallout (radioactive) NEC 990
  fluoroscopy NEC 990 fluoroscopy NEC 990
  implantation (removable) of isotope or radium NEC 990 implantation (removable) of isotope or radium NEC 990
  infrared (radiation) (rays) NEC 990 infrared (radiation) (rays) NEC 990  burn - see Burn, by site burn - see Burn, by site
  dermatitis or eczema 692.82 dermatitis or eczema 692.82 
 
  ingestion or injection of isotope (therapeutic) NEC 990 ingestion or injection of isotope (therapeutic) NEC 990
  irradiation NEC (see also Effect, adverse, radiation) 990 irradiation NEC (see also Effect, adverse, radiation) 990
  isotope (radioactive) NEC 990 isotope (radioactive) NEC 990
  mesothorium NEC 990 mesothorium NEC 990
  polonium NEC 990 polonium NEC 990
  radiation (diagnostic) (fallout) (infrared) (natural source) (therapeutic) (tracer) (ultraviolet) (x-ray) NEC 990 radiation (diagnostic) (fallout) (infrared) (natural source) (therapeutic) (tracer) (ultraviolet) (x-ray) NEC 990  with pulmonary manifestations with pulmonary manifestations
  dermatitis or eczema 692.82 dermatitis or eczema 692.82    due to sun NEC (see also Dermatitis, due to, sun) 692.70 due to sun NEC (see also Dermatitis, due to, sun) 692.70 
 
  fibrosis of lungs 508.1 fibrosis of lungs 508.1 
  maternal with suspected damage to fetus affecting management of pregnancy 655.6 maternal with suspected damage to fetus affecting management of pregnancy 655.6 
  pneumonitis 508.0 pneumonitis 508.0 
 
  radioactive substance NEC 990 radioactive substance NEC 990
  radioactivity NEC 990 radioactivity NEC 990
  radiotherapy NEC 990 radiotherapy NEC 990
  radium NEC 990 radium NEC 990
  roentgenography NEC 990 roentgenography NEC 990
  roentgenoscopy NEC 990 roentgenoscopy NEC 990
  roentgen rays NEC 990 roentgen rays NEC 990
  teletherapy NEC 990 teletherapy NEC 990
  ultraviolet (radiation) (rays) NEC 990 ultraviolet (radiation) (rays) NEC 990  burn - see also Burn, by site burn - see also Burn, by site   from sun (see also Sunburn) 692.71 from sun (see also Sunburn) 692.71 
 
  dermatitis or eczema 692.82 dermatitis or eczema 692.82    due to sun NEC (see also Dermatitis, due to, sun) 692.70 due to sun NEC (see also Dermatitis, due to, sun) 692.70 
 
 
  uranium NEC 990 uranium NEC 990
  working environment V62.1 working environment V62.1   x-rays NEC 990 x-rays NEC 990
  dermatitis or eczema 692.82 dermatitis or eczema 692.82 
 
 
- Fallout, radioactive (adverse effect) NEC 990
- Injury 959.9  cathode ray 990 cathode ray 990
  infrared rays NEC 990 infrared rays NEC 990
  radiation NEC 990 radiation NEC 990
  radioactive substance or radium NEC 990 radioactive substance or radium NEC 990
  roentgen rays NEC 990 roentgen rays NEC 990
  ultraviolet rays NEC 990 ultraviolet rays NEC 990
  x-ray NEC 990 x-ray NEC 990
 
- Irradiation effects, adverse 990 effects, adverse 990
 
- Lesion(s) radiation NEC 990 radiation NEC 990
  radium NEC 990 radium NEC 990
  x-ray NEC 990 x-ray NEC 990
 
- Misadventure (prophylactic) (therapeutic) (see also Complications) 999.9  radiation NEC 990 radiation NEC 990
  radiotherapy NEC 990 radiotherapy NEC 990
 
- Sickness radiation NEC 990 radiation NEC 990
 
- Syndrome - see also Disease postirradiation 990 postirradiation 990
 
- Teletherapy, adverse effect NEC 990
- X-ray effects, adverse, NEC 990 effects, adverse, NEC 990