EOMA 1980 - EPSG:5787

WKT

VERTCS["EOMA_1980", 
	VDATUM["Baltic_1980"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["EOMA_1980", 
	VDATUM["Baltic_1980"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "5787"]]

Data from @esri/proj-codes

{
  "wkid": 5787,
  "latestWkid": 5787,
  "macro": "PE_VCS_EOMA_1980",
  "name": "EOMA_1980",
  "wkt": "VERTCS[\"EOMA_1980\",VDATUM[\"Baltic_1980\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"EOMA_1980\",VDATUM[\"Baltic_1980\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"5787\"]]",
  "description": "EOMA 1980",
  "authority": "EPSG",
  "version": "6.7(9.3.0.0)",
  "deprecated": "no",
  "areaname": "Hungary",
  "extent": {
    "slat": 45.74,
    "nlat": 48.58,
    "llon": 16.11,
    "rlon": 22.9
  }
}