ICD-10-CM 2027
ICD-10 code for organic parasomnia
From the official ICD-10-CM alphabetic index entry “Parasomnia › organic”. Page updated September 29, 2026.
About coding organic parasomnia
The ICD-10-CM code for organic parasomnia is G47.50 (Parasomnia, unspecified).
Within G47.5, choose G47.50 (unspecified) only when documentation doesn't support a more specific option: Confusional arousals (G47.51), REM sleep behavior disorder (G47.52), recurrent isolated sleep paralysis (G47.53), in conditions classified elsewhere (G47.54) and other parasomnia (G47.59).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC, relative weight 1.5921), DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC, relative weight 0.9322) and DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about organic parasomnia ICD-10 codes
What is the ICD-10 code for organic parasomnia?
- G47.50 — Parasomnia, unspecified.
Is G47.50 billable?
- Yes. G47.50 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G47.50 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G47.50 as a principal diagnosis.
Is G47.50 a CC or MCC?
- No. G47.50 is neither a CC nor an MCC under MS-DRG v44.0.