AIOC95 height - EPSG:5797

WKT

VERTCS["AIOC95_Height", 
	VDATUM["AIOC_1995"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", 1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["AIOC95_Height", 
	VDATUM["AIOC_1995"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", up, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "5797"]]

Data from @esri/proj-codes

{
  "wkid": 5797,
  "latestWkid": 5797,
  "macro": "PE_VCS_AIOC95_HEIGHT",
  "name": "AIOC95_Height",
  "wkt": "VERTCS[\"AIOC95_Height\",VDATUM[\"AIOC_1995\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"AIOC95_Height\",VDATUM[\"AIOC_1995\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"5797\"]]",
  "description": "AIOC95 height",
  "authority": "EPSG",
  "version": "6.15(9.3.0.0)",
  "deprecated": "no",
  "areaname": "Azerbaijan - offshore and Sangachal",
  "extent": {
    "slat": 37.89,
    "nlat": 42.59,
    "llon": 48.66,
    "rlon": 51.73
  }
}