PZ 1990 - ESRI:115773

WKT

VERTCS["PZ_1990", 
	DATUM["D_Parametrop_Zemp_1990", 
		SPHEROID["PZ_1990", 6378136.0, 298.257839303]], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["PZ_1990", 
	DYNAMIC[
		FRAMEEPOCH[1990.0]], 
	DATUM["D_Parametrop_Zemp_1990", 
		ELLIPSOID["PZ_1990", 6378136.0, 298.257839303]], 
	CS[vertical, 1], 
	AXIS["Ellipsoidal height (h)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["Esri", "115773"]]

Data from @esri/proj-codes

{
  "wkid": 115773,
  "latestWkid": 115773,
  "macro": "PE_VCS_PZ_1990",
  "name": "PZ_1990",
  "wkt": "VERTCS[\"PZ_1990\",DATUM[\"D_Parametrop_Zemp_1990\",SPHEROID[\"PZ_1990\",6378136.0,298.257839303]],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"PZ_1990\",DYNAMIC[FRAMEEPOCH[1990.0]],DATUM[\"D_Parametrop_Zemp_1990\",ELLIPSOID[\"PZ_1990\",6378136.0,298.257839303]],CS[vertical,1],AXIS[\"Ellipsoidal height (h)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"Esri\",\"115773\"]]",
  "description": "PZ 1990",
  "authority": "Esri",
  "version": "10.4.0",
  "deprecated": "no",
  "areaname": "World",
  "extent": {
    "slat": -90,
    "nlat": 90,
    "llon": -180,
    "rlon": 180
  }
}