NAD83(PA11) + ASVD02 height - EPSG:9526

WKT

HVCOORDSYS["NAD83(PA11)_and_ASVD02_height", 
	GEOGCS["GCS_NAD_1983_PA11", 
		DATUM["D_NAD_1983_PA11", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	VERTCS["ASVD02_height", 
		VDATUM["American_Samoa_Vertical_Datum_of_2002"], 
		PARAMETER["Vertical_Shift", 0.0], 
		PARAMETER["Direction", 1.0], 
		UNIT["Meter", 1.0]]]

WKT2

COMPOUNDCRS["NAD83(PA11)_and_ASVD02_height", 
	GEOGCRS["GCS_NAD_1983_PA11", 
		DYNAMIC[
			FRAMEEPOCH[2012.4467], 
			MODEL["HTDP"]], 
		DATUM["D_NAD_1983_PA11", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	VERTCRS["ASVD02_height", 
		VDATUM["American_Samoa_Vertical_Datum_of_2002"], 
		CS[vertical, 1], 
		AXIS["Gravity-related height (H)", up, 
			LENGTHUNIT["Meter", 1.0]]], 
	ID["EPSG", "9526"]]

Data from @esri/proj-codes

{
  "wkid": 9526,
  "latestWkid": 9526,
  "pcsWkid": 0,
  "gcsWkid": 6322,
  "vcsWkid": 6643,
  "macro": "PE_HVC_NAD83PA11_ASVD02_HEIGHT",
  "name": "NAD83(PA11)_and_ASVD02_height",
  "wkt": "HVCOORDSYS[\"NAD83(PA11)_and_ASVD02_height\",GEOGCS[\"GCS_NAD_1983_PA11\",DATUM[\"D_NAD_1983_PA11\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],VERTCS[\"ASVD02_height\",VDATUM[\"American_Samoa_Vertical_Datum_of_2002\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]]",
  "wkt2": "COMPOUNDCRS[\"NAD83(PA11)_and_ASVD02_height\",GEOGCRS[\"GCS_NAD_1983_PA11\",DYNAMIC[FRAMEEPOCH[2012.4467],MODEL[\"HTDP\"]],DATUM[\"D_NAD_1983_PA11\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],VERTCRS[\"ASVD02_height\",VDATUM[\"American_Samoa_Vertical_Datum_of_2002\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",up,LENGTHUNIT[\"Meter\",1.0]]],ID[\"EPSG\",\"9526\"]]",
  "description": "NAD83(PA11) + ASVD02 height",
  "authority": "EPSG",
  "version": "10.013(13.2.0)",
  "deprecated": "no",
  "areaname": "American Samoa - Tutuila island",
  "extent": {
    "slat": -14.43,
    "nlat": -14.2,
    "llon": -170.88,
    "rlon": -170.51
  }
}