ICD-10-CM > R00-R99 > R10-R19 > R19 > R19.7 R19.7 Diarrhea, unspecified Billable/Specific Copy Code Copy Description Applicable To Diarrhea NOS Type 1 Excludes functional diarrhea (K59.1)neonatal diarrhea (P78.3)psychogenic diarrhea (F45.8)