CREATE OR REPLACE PACKAGE test
AS

---place all hard code here as Hardcode Library.

v_code_1  VARCHAR2(32767) :=   ('114','124','134','144','154'); 
v_code_2  VARCHAR2(32767) :=   ('204','450','513','901','918');

---OR put into type table , something like this way if it works

v_code_1  varchar2_tt := varchar2_tt :=   ('114','124','134','144','154'); 
v_code_2  varchar2_tt := varchar2_tt :=   ('204','450','513','901','918');

  procedure proc1;

  function  func1;

END test;

CREATE OR REPLACE PACKAGE BODY TEST
AS

   procedure proc1
   IS
   BEGIN
       
        IF l_code    IN (V_CODE_1) THEN   ----So that I dont have to repeat hard code logic here
          PROCESS......
        ELSIF l_code IN (V_CODE_2) THEN   ----So that I dont have to repeat hard code logic here
          PROCESS....
        END IF;
    
      more process........

   END;


  procedure FUNC1
  RETURN boolean
  IS
  v_check BOOLEAN
  BEGIN
       
        IF l_code    IN (V_CODE_1) THEN  ----So that I dont have to repeat hard code logic here
          PROCESS......
        ELSIF l_code IN (V_CODE_2) THEN  ----So that I dont have to repeat hard code logic here
          PROCESS....
        END IF;
    
      more process........

  RETURN check;
  END;


END TEST;