diff --git a/fsfwgen/events/event_parser.py b/fsfwgen/events/event_parser.py
index 0581548..1e7ed30 100644
--- a/fsfwgen/events/event_parser.py
+++ b/fsfwgen/events/event_parser.py
@@ -1,4 +1,5 @@
 import re
+import enum
 import logging
 from pathlib import Path
 from typing import List, Optional, Dict
@@ -15,6 +16,25 @@ SUBSYSTEM_ID_NAMESPACE = "SUBSYSTEM_ID"
 EVENT_NAME_IDX = 1
 
 
+class Severity(enum.IntEnum):
+    INFO = 0
+    LOW = 1
+    MEDIUM = 2
+    HIGH = 3
+
+
+def severity_str_to_enum(severity: str) -> Severity | None:
+    if severity == "INFO":
+        return Severity.INFO
+    if severity == "LOW":
+        return Severity.LOW
+    if severity == "MEDIUM":
+        return Severity.MEDIUM
+    if severity == "HIGH":
+        return Severity.HIGH
+    return None
+
+
 class SubsystemDefinitionParser(FileParser):
     def __init__(self, file_list):
         super().__init__(file_list)
@@ -69,8 +89,8 @@ class EventParser(FileParser):
         self.set_moving_window_mode(moving_window_size)
         self.interfaces = interface_list
         self.count = 0
-        self.my_id = 0
-        self.current_id = 0
+        self.current_group_id = 0
+        self.current_unique_id = 0
         self.mib_table: EventDictT = dict()
         self.obsw_root_path: Optional[Path] = None
         self.last_lines = ["", "", ""]
@@ -96,8 +116,8 @@ class EventParser(FileParser):
             # For now, it is assumed that there is only going to be one subsystem ID per
             # class / source file
             try:
-                self.current_id = self.interfaces[subsystem_id_assignment_match.group(1)][0]
-                self.my_id = self.return_number_from_string(self.current_id)
+                self.current_group_id = self.interfaces[subsystem_id_assignment_match.group(1)][0]
+                self.current_group_id = self.return_number_from_string(self.current_group_id)
             except KeyError as e:
                 print(f"Key not found: {e}")
         # Now try to look for event definitions. Moving windows allows multi line event definitions
@@ -156,17 +176,28 @@ class EventParser(FileParser):
         if event_full_match:
             name = event_match.group(EVENT_NAME_IDX)
             if macro_api_match:
-                full_id = (self.my_id * 100) + self.return_number_from_string(
-                    event_full_match.group(2)
-                )
                 severity = event_full_match.group(3)
+                severity_num = severity_str_to_enum(severity)
+                if severity_num is None:
+                    raise ValueError(f"Unknown severity: {severity}")
+                full_id = (
+                    (severity_num << 30)
+                    | (self.current_group_id << 16)
+                    | self.return_number_from_string(event_full_match.group(2))
+                )
             else:
+                severity = event_full_match.group(4)
+                severity_num = severity_str_to_enum(severity)
+                if severity_num is None:
+                    raise ValueError(f"Unknown severity: {severity}")
                 if event_full_match.group(1) == "EV_REPLY_INVALID_SIZE":
                     print(f"Group 3: {event_full_match.group(3)}")
-                full_id = (self.my_id * 100) + self.return_number_from_string(
-                    event_full_match.group(3)
+                full_id = (
+                    (severity_num << 30)
+                    | (self.current_group_id << 16)
+                    | self.return_number_from_string(event_full_match.group(3))
                 )
-                severity = event_full_match.group(4)
+
             if self.obsw_root_path is not None:
                 file_name = file_name.relative_to(self.obsw_root_path)
             if self.mib_table.get(full_id) is not None:
@@ -254,13 +285,15 @@ def export_to_csv(filename: Path, event_list: EventDictT, col_sep: str):
 
 
 def write_translation_source_file(
-    event_list: EventDictT, date_string: str, filename: Path = "translateEvents.cpp"
+    event_list: EventDictT,
+    date_string: str,
+    filename: Path = Path("translateEvents.cpp"),
 ):
     with open(filename, "w") as out:
         definitions = ""
         # Look up table to avoid duplicate events
         lut = dict()
-        function = "const char *translateEvents(Event event) {\n  switch ((event & 0xFFFF)) {\n"
+        function = "const char *translateEvents(Event event) {\n  switch (event) {\n"
         for entry in event_list.items():
             event_id = entry[0]
             event_value = entry[1]
@@ -272,8 +305,8 @@ def write_translation_source_file(
                 _LOGGER.warning(f"Name: {name}, Event Entry: {event_value}")
                 name = f"{name}_{event_id}"
                 _LOGGER.info(f"Created unique name {name}")
-            definitions += f"const char *{name}_STRING " f'= "{name}";\n'
-            function += f"    case ({event_id}):\n      " f"return {name}_STRING;\n"
+            definitions += f'const char *{name}_STRING = "{name}";\n'
+            function += f"    case ({event_id}):\n      return {name}_STRING;\n"
             lut.update({name: event_value})
         function += '    default:\n      return "UNKNOWN_EVENT";\n'
         out.write(
@@ -286,7 +319,7 @@ def write_translation_source_file(
         out.write(definitions + "\n" + function + "  }\n  return 0;\n}\n")
 
 
-def write_translation_header_file(filename: Path = "translateEvents.h"):
+def write_translation_header_file(filename: Path = Path("translateEvents.h")):
     with open(filename, "w") as out:
         out.write(
             f"#ifndef FSFWCONFIG_EVENTS_TRANSLATEEVENTS_H_\n"