diff --git a/src/components/inquiry/RegistForm.tsx b/src/components/inquiry/RegistForm.tsx
index 7cf5b9d..460a990 100644
--- a/src/components/inquiry/RegistForm.tsx
+++ b/src/components/inquiry/RegistForm.tsx
@@ -2,7 +2,7 @@
 
 import { useInquiry } from '@/hooks/useInquiry'
 import { useSessionStore } from '@/store/session'
-import { InquiryRequest } from '@/types/Inquiry'
+import { InquiryCommCode, InquiryRequest } from '@/types/Inquiry'
 import { useEffect, useState } from 'react'
 import { useRouter } from 'next/navigation'
 import { CONFIRM_MESSAGE, SUCCESS_MESSAGE, useAlertMsg, WARNING_MESSAGE } from '@/hooks/useAlertMsg'
@@ -152,15 +152,15 @@ export default function RegistForm() {
                   選択してください
                 </option>
                 {commonCodeList
-                  .filter((code) => code.headId === 'QNA_CLS_LRG_CD')
+                  .filter((code) => code.headCd === InquiryCommCode.QNA_CLS_LRG_CD.headCd)
                   .map((code) => (
                     <option key={code.code} value={code.code}>
-                      {code.name}
+                      {code.codeJp}
                     </option>
                   ))}
               </select>
             </div>
-            {commonCodeList.filter((code) => code.refChar1 === inquiryRequest.qnaClsLrgCd).length > 0 && inquiryRequest.qnaClsLrgCd && (
+            {commonCodeList.filter((code) => code.refChr1 === inquiryRequest.qnaClsLrgCd).length > 0 && inquiryRequest.qnaClsLrgCd && (
               <div className="data-input mt5">
                 <select
                   className="select-form"
@@ -173,16 +173,16 @@ export default function RegistForm() {
                     選択してください
                   </option>
                   {commonCodeList
-                    .filter((code) => code.refChar1 === inquiryRequest.qnaClsLrgCd)
+                    .filter((code) => code.refChr1 === inquiryRequest.qnaClsLrgCd)
                     .map((code) => (
                       <option key={code.code} value={code.code}>
-                        {code.name}
+                        {code.codeJp}
                       </option>
                     ))}
                 </select>
               </div>
             )}
-            {commonCodeList.filter((code) => code.refChar1 === inquiryRequest.qnaClsMidCd).length > 0 && inquiryRequest.qnaClsMidCd && (
+            {commonCodeList.filter((code) => code.refChr1 === inquiryRequest.qnaClsMidCd).length > 0 && inquiryRequest.qnaClsMidCd && (
               <div className="data-input mt5">
                 <select
                   className="select-form"
@@ -195,10 +195,10 @@ export default function RegistForm() {
                     選択してください
                   </option>
                   {commonCodeList
-                    .filter((code) => code.refChar1 === inquiryRequest.qnaClsMidCd)
+                    .filter((code) => code.refChr1 === inquiryRequest.qnaClsMidCd)
                     .map((code) => (
                       <option key={code.code} value={code.code}>
-                        {code.name}
+                        {code.codeJp}
                       </option>
                     ))}
                 </select>
diff --git a/src/hooks/useInquiry.ts b/src/hooks/useInquiry.ts
index 25bb533..cd87401 100644
--- a/src/hooks/useInquiry.ts
+++ b/src/hooks/useInquiry.ts
@@ -1,11 +1,12 @@
-import { InquiryList, Inquiry, InquirySaveResponse, CommonCode } from '@/types/Inquiry'
+import { InquiryList, Inquiry, InquirySaveResponse, InquiryCommCode } from '@/types/Inquiry'
 import { useAxios } from '@/hooks/useAxios'
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
 import { useInquiryFilterStore } from '@/store/inquiryFilterStore'
 import { useMemo } from 'react'
 import { useRouter } from 'next/navigation'
 import { useAlertMsg } from '@/hooks/useAlertMsg'
-
+import { useCommCode } from './useCommCode'
+import { CommCode } from '@/types/CommCode'
 
 /**
  * @description 문의사항 관련 기능을 제공하는 커스텀 훅
@@ -20,7 +21,7 @@ import { useAlertMsg } from '@/hooks/useAlertMsg'
  * @returns {boolean} isSavingInquiry - 문의사항 저장 중 상태
  * @returns {Function} saveInquiry - 문의사항 저장 함수
  * @returns {Function} downloadFile - 파일 다운로드 함수
- * @returns {CommonCode[]} commonCodeList - 공통 코드 목록
+ * @returns {CommCode[]} commonCodeList - 공통 코드 목록
  */
 export function useInquiry(
   qnoNo?: number,
@@ -33,7 +34,7 @@ export function useInquiry(
   isSavingInquiry: boolean
   saveInquiry: (formData: FormData) => Promise<InquirySaveResponse>
   downloadFile: (encodeFileNo: number, srcFileNm: string) => Promise<Blob | null>
-  commonCodeList: CommonCode[]
+  commonCodeList: CommCode[]
 } {
   const queryClient = useQueryClient()
   const { inquiryListRequest, offset, isMyInquiry } = useInquiryFilterStore()
@@ -216,7 +217,8 @@ export function useInquiry(
   }
 
   /**
-   * @description 공통 코드 목록 조회
+   * @description 문의 공통 코드 목록 조회
+   * - 문의 유형 대분류, 중분류, 소분류 코드 조회 이후 데이터 리로드 하지 않음
    *
    * @returns {Object} 공통 코드 목록 데이터
    * @returns {CommonCode[]} data - 공통 코드 목록
@@ -225,15 +227,13 @@ export function useInquiry(
   const { data: commonCodeList, isLoading: isLoadingCommonCodeList } = useQuery({
     queryKey: ['commonCodeList'],
     queryFn: async () => {
-      const isListQuery = false
-      const shouldThrowError = false
-
-      const resp = await tryFunction(
-        () => axiosInstance(null).get<CommonCode[]>('/api/comm-code', { params: { headId: 'QNA_CD' } }),
-        isListQuery,
-        shouldThrowError,
-      )
-      return resp?.data ?? []
+      const { getCommCode } = useCommCode()
+      const resp = await Promise.all([
+        getCommCode(InquiryCommCode.QNA_CLS_LRG_CD.headId),
+        getCommCode(InquiryCommCode.QNA_CLS_MID_CD.headId),
+        getCommCode(InquiryCommCode.QNA_CLS_SML_CD.headId),
+      ])
+      return resp.flat()
     },
     staleTime: Infinity,
     gcTime: Infinity,
diff --git a/src/types/Inquiry.ts b/src/types/Inquiry.ts
index c54d9dc..888ef6e 100644
--- a/src/types/Inquiry.ts
+++ b/src/types/Inquiry.ts
@@ -180,13 +180,17 @@ export type InquirySaveResponse = {
   mailYn: string 
 }
 
-/**
- * @description 공통 코드 타입
- */
-export type CommonCode = {
-  headCd: string
-  headId: string
-  code: string
-  name: string
-  refChar1: string
+export const InquiryCommCode = {
+  QNA_CLS_LRG_CD: {
+    headCd: '204200',
+    headId: 'QNA_CLS_LRG_CD',
+  },
+  QNA_CLS_MID_CD: {
+    headCd: '204300',
+    headId: 'QNA_CLS_MID_CD',
+  },
+  QNA_CLS_SML_CD: {
+    headCd: '204400',
+    headId: 'QNA_CLS_SML_CD',
+  },
 }