Convert to ICD-10-CM: 
337.9 converts approximately to:
- 2015/16 ICD-10-CM G90.9 Disorder of the autonomic nervous system, unspecified
 ICD-9-CM Volume 2 Index entries containing back-references to 
337.9:
- Angiospasm 443.9  nerve nerve  arm 354.9 arm 354.9 
  autonomic (see also Neuropathy, peripheral, autonomic) 337.9 autonomic (see also Neuropathy, peripheral, autonomic) 337.9
  axillary 353.0 axillary 353.0 
  leg 355.8 leg 355.8 
  lower extremity - see Angiospasm, nerve, leg lower extremity - see Angiospasm, nerve, leg
  median 354.1 median 354.1 
  peripheral NEC 355.9 peripheral NEC 355.9 
  spinal NEC 355.9 spinal NEC 355.9 
  sympathetic (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic (see also Neuropathy, peripheral, autonomic) 337.9
  ulnar 354.2 ulnar 354.2 
  upper extremity - see Angiospasm, nerve, arm upper extremity - see Angiospasm, nerve, arm
 
 
- Autonomic, autonomous faciocephalalgia (see also Neuropathy, peripheral, autonomic) 337.9 faciocephalalgia (see also Neuropathy, peripheral, autonomic) 337.9
  imbalance (see also Neuropathy, peripheral, autonomic 337.9 imbalance (see also Neuropathy, peripheral, autonomic 337.9
 
- Bernard-Horner syndrome (see also Neuropathy, peripheral, autonomic) 337.9
- Claude Bernard-Horner syndrome (see also Neuropathy, peripheral, autonomic) 337.9
- Compression nerve NEC - see also Disorder, nerve nerve NEC - see also Disorder, nerve  arm NEC 354.9 arm NEC 354.9 
  autonomic nervous system (see also Neuropathy, peripheral, autonomic) 337.9 autonomic nervous system (see also Neuropathy, peripheral, autonomic) 337.9
  axillary 353.0 axillary 353.0 
  cranial NEC 352.9 cranial NEC 352.9 
  due to displacement of intervertebral disc 722.2 due to displacement of intervertebral disc 722.2 
  iliohypogastric 355.79 iliohypogastric 355.79 
  ilioinguinal 355.79 ilioinguinal 355.79 
  leg NEC 355.8 leg NEC 355.8 
  lower extremity NEC 355.8 lower extremity NEC 355.8 
  median (in carpal tunnel) 354.0 median (in carpal tunnel) 354.0 
  obturator 355.79 obturator 355.79 
  optic 377.49 optic 377.49 
  plantar 355.6 plantar 355.6 
  posterior tibial (in tarsal tunnel) 355.5 posterior tibial (in tarsal tunnel) 355.5 
  root (by scar tissue) NEC 724.9 root (by scar tissue) NEC 724.9 
  saphenous 355.79 saphenous 355.79 
  sciatic (acute) 355.0 sciatic (acute) 355.0 
  sympathetic 337.9 sympathetic 337.9
  traumatic - see Injury, nerve traumatic - see Injury, nerve
  ulnar 354.2 ulnar 354.2 
  upper extremity NEC 354.9 upper extremity NEC 354.9 
 
  sympathetic nerve NEC 337.9 sympathetic nerve NEC 337.9
 
- Cyst (mucus) (retention) (serous) (simple) sympathetic nervous system 337.9 sympathetic nervous system 337.9
 
- Degeneration, degenerative nervous system 349.89 nervous system 349.89   amyloid 277.39 amyloid 277.39 [357.4 [357.4 ] ]
  autonomic (see also Neuropathy, peripheral, autonomic) 337.9 autonomic (see also Neuropathy, peripheral, autonomic) 337.9
  fatty 349.89 fatty 349.89 
  peripheral autonomic NEC (see also Neuropathy, peripheral, autonomic) 337.9 peripheral autonomic NEC (see also Neuropathy, peripheral, autonomic) 337.9
 
 
- Disease, diseased - see also Syndrome nervous system (central) 349.9 nervous system (central) 349.9   autonomic, peripheral (see also Neuropathy, peripheral, autonomic) 337.9 autonomic, peripheral (see also Neuropathy, peripheral, autonomic) 337.9
  congenital 742.9 congenital 742.9 
  inflammatory - see Encephalitis inflammatory - see Encephalitis
  parasympathetic (see also Neuropathy, peripheral, autonomic) 337.9 parasympathetic (see also Neuropathy, peripheral, autonomic) 337.9
  peripheral NEC 355.9 peripheral NEC 355.9 
  specified NEC 349.89 specified NEC 349.89 
  sympathetic (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic (see also Neuropathy, peripheral, autonomic) 337.9
  vegetative (see also Neuropathy, peripheral, autonomic) 337.9 vegetative (see also Neuropathy, peripheral, autonomic) 337.9
 
  peripheral peripheral  arterial 443.9 arterial 443.9 
  autonomic nervous system (see also Neuropathy, autonomic) 337.9 autonomic nervous system (see also Neuropathy, autonomic) 337.9
  nerve NEC (see also Neuropathy) 356.9 nerve NEC (see also Neuropathy) 356.9    multiple - see Polyneuropathy multiple - see Polyneuropathy
 
  vascular 443.9 vascular 443.9 
 
  sympathetic nervous system (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic nervous system (see also Neuropathy, peripheral, autonomic) 337.9
 
- Disorder - see also Disease nervous system NEC 349.9 nervous system NEC 349.9   autonomic (peripheral) (see also Neuropathy, peripheral, autonomic) 337.9 autonomic (peripheral) (see also Neuropathy, peripheral, autonomic) 337.9
  cranial 352.9 cranial 352.9 
  parasympathetic (see also Neuropathy, peripheral, autonomic) 337.9 parasympathetic (see also Neuropathy, peripheral, autonomic) 337.9
  specified type NEC 349.89 specified type NEC 349.89 
  sympathetic (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic (see also Neuropathy, peripheral, autonomic) 337.9
  vegetative (see also Neuropathy, peripheral, autonomic) 337.9 vegetative (see also Neuropathy, peripheral, autonomic) 337.9
 
 
- Disturbance - see also Disease sympathetic (nerve) (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic (nerve) (see also Neuropathy, peripheral, autonomic) 337.9
 
- Dysautonomia (see also Neuropathy, peripheral, autonomic) 337.9
- Dystrophy, dystrophia 783.9  neurovascular (traumatic) (see also Neuropathy, peripheral, autonomic) 337.9 neurovascular (traumatic) (see also Neuropathy, peripheral, autonomic) 337.9
 
- Faciocephalalgia, autonomic (see also Neuropathy, peripheral, autonomic) 337.9
- Horner's syndrome (see also Neuropathy, peripheral, autonomic) 337.9 syndrome (see also Neuropathy, peripheral, autonomic) 337.9
 
- Imbalance 781.2  autonomic (see also Neuropathy, peripheral, autonomic) 337.9 autonomic (see also Neuropathy, peripheral, autonomic) 337.9
  sympathetic (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic (see also Neuropathy, peripheral, autonomic) 337.9
 
- Irritability (nervous) 799.2  sympathetic (nervous system) (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic (nervous system) (see also Neuropathy, peripheral, autonomic) 337.9
 
- Irritation peripheral peripheral  autonomic nervous system (see also Neuropathy, peripheral, autonomic) 337.9 autonomic nervous system (see also Neuropathy, peripheral, autonomic) 337.9
  nerve - see Disorder, nerve nerve - see Disorder, nerve
 
  sympathetic nerve NEC (see also Neuropathy, peripheral, autonomic) 337.9 sympathetic nerve NEC (see also Neuropathy, peripheral, autonomic) 337.9
 
- Neuropathy, neuropathic (see also Disorder, nerve) 355.9  peripheral (nerve) (see also Polyneuropathy) 356.9 peripheral (nerve) (see also Polyneuropathy) 356.9   arm NEC 354.9 arm NEC 354.9 
  autonomic 337.9 autonomic 337.9
  due to due to
  hereditary 356.0 hereditary 356.0 
  idiopathic 356.9 idiopathic 356.9 
  in diseases classified elsewhere - see Polyneuropathy, in in diseases classified elsewhere - see Polyneuropathy, in
  leg NEC 355.8 leg NEC 355.8 
  lower extremity NEC 355.8 lower extremity NEC 355.8 
  upper extremity NEC 354.9 upper extremity NEC 354.9 
 
 
- Paralysis, paralytic (complete) (incomplete) 344.9  sympathetic sympathetic  cervical NEC 337.0 cervical NEC 337.0 
  nerve NEC (see also Neuropathy, peripheral, autonomic) 337.9 nerve NEC (see also Neuropathy, peripheral, autonomic) 337.9
  nervous system - see Neuropathy, peripheral, autonomic nervous system - see Neuropathy, peripheral, autonomic
 
  vasomotor NEC 337.9 vasomotor NEC 337.9
 
- Phenomenon Reilly's (see also Neuropathy, peripheral, autonomic) 337.9 Reilly's (see also Neuropathy, peripheral, autonomic) 337.9
 
- Reilly's syndrome or phenomenon (see also Neuropathy, peripheral, autonomic) 337.9
- Steinbrocker's syndrome (see also Neuropathy, peripheral, autonomic) 337.9
- Sympatheticotonia (see also Neuropathy, peripheral, autonomic) 337.9
- Syndrome - see also Disease arm-shoulder (see also Neuropathy, peripheral, autonomic) 337.9 arm-shoulder (see also Neuropathy, peripheral, autonomic) 337.9
  Bernard-Horner (see also Neuropathy, peripheral, autonomic) 337.9 Bernard-Horner (see also Neuropathy, peripheral, autonomic) 337.9
  Claude Bernard-Horner (see also Neuropathy, peripheral, autonomic) 337.9 Claude Bernard-Horner (see also Neuropathy, peripheral, autonomic) 337.9
  Horner's (see also Neuropathy, peripheral, autonomic) 337.9 Horner's (see also Neuropathy, peripheral, autonomic) 337.9  traumatic - see Injury, nerve, cervical sympathetic traumatic - see Injury, nerve, cervical sympathetic
 
  hypersympathetic (see also Neuropathy, peripheral, autonomic) 337.9 hypersympathetic (see also Neuropathy, peripheral, autonomic) 337.9
  Reilly's (see also Neuropathy, peripheral, autonomic 337.9 Reilly's (see also Neuropathy, peripheral, autonomic 337.9
  shoulder-arm (see also Neuropathy, peripheral, autonomic) 337.9 shoulder-arm (see also Neuropathy, peripheral, autonomic) 337.9
  shoulder-hand (see also Neuropathy, peripheral, autonomic) 337.9 shoulder-hand (see also Neuropathy, peripheral, autonomic) 337.9
  Steinbrocker's (see also Neuropathy, peripheral, autonomic) 337.9 Steinbrocker's (see also Neuropathy, peripheral, autonomic) 337.9
 
- Vasoplegia, splanchnic (see also Neuropathy, peripheral, autonomic) 337.9
- Vasospasm 443.9  nerve nerve