FVR09 height - EPSG:5317

WKT

VERTCS["FVR09_height", 
	VDATUM["Faroe_Islands_Vertical_Reference_2009"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["FVR09_height", 
	VDATUM["Faroe_Islands_Vertical_Reference_2009"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "5317"]]

Data from @esri/proj-codes

{
  "wkid": 5317,
  "latestWkid": 5317,
  "macro": "PE_VCS_FVR09_HT",
  "name": "FVR09_height",
  "wkt": "VERTCS[\"FVR09_height\",VDATUM[\"Faroe_Islands_Vertical_Reference_2009\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"FVR09_height\",VDATUM[\"Faroe_Islands_Vertical_Reference_2009\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"5317\"]]",
  "description": "FVR09 height",
  "authority": "EPSG",
  "version": "7.6(10.1.0)",
  "deprecated": "no",
  "areaname": "Faroe Islands - onshore",
  "extent": {
    "slat": 61.33,
    "nlat": 62.41,
    "llon": -7.49,
    "rlon": -6.33
  }
}