BCBS Alpha Numeric Prefix List (K2A to K9Z)

Today you will find The BCBS Alpha Numeric Prefix List from K2A to K9Z. The alpha Numeric prefix is very important to the identification number. The prefix acts as a key element in confirming the members’ eligibility and coverage information. Prefixes are also used to identify and correctly route claims to the appropriate Blue Cross Blue Shield Plan for processing. Most members with coverage through a Blue Cross Blue Shield Plan are assigned a Three Letter alpha prefix as a part of their unique identification number. The alpha prefix can easily be identified as it is the first three characters.

S.No	Prefix	BCBS Company Name
1	K2A	Blue Cross Blue Shield of Texas
2	K2B	Blue Cross Blue Shield of Texas
3	K2C	Regence Blue Cross Blue Shield
4	K2D	Blue Cross Blue Shield of Illinois
5	K2E	Anthem Blue Cross of California
6	K2F	Blue Cross Blue Shield of Illinois
7	K2G	Blue Cross Blue Shield of Oklahoma
8	K2H	Blue Cross Blue Shield of Western New York
9	K2I	Unassigned Prefix
10	K2J	Highmark Blue Cross Blue Shield
11	K2K	Highmark Blue Cross Blue Shield
12	K2L	Highmark Blue Cross Blue Shield
13	K2M	Horizon Blue Cross Blue Shield
14	K2N	Blue Cross Blue Shield of Vermont
15	K2O	Unassigned Prefix
16	K2P	Horizon Blue Cross Blue Shield
17	K2Q	Unassigned Prefix
18	K2R	Highmark Blue Cross Blue Shield
19	K2S	Premera Blue Cross
20	K2T	Blue Cross Blue Shield of Minnesota
21	K2U	Highmark Blue Cross Blue Shield
22	K2V	Highmark Blue Cross Blue Shield
23	K2W	Anthem Blue Cross Blue Shield of Kentucky
24	K2X	Blue Cross Blue Shield of Illinois
25	K2Y	Anthem Blue Cross Blue Shield of Indiana
26	K2Z	Anthem Blue Cross Blue Shield of Kentucky
27	K3A	Anthem Blue Cross of California
28	K3B	Empire Blue Cross Blue Shield
29	K3C	Anthem Blue Cross Blue Shield of Virginia
30	K3D	Unassigned Prefix
31	K3E	Unassigned Prefix
32	K3F	Anthem Blue Cross Blue Shield of Georgia
33	K3G	Regence Blue Cross Blue Shield
34	K3H	Highmark Blue Shield
35	K3I	Unassigned Prefix
36	K3J	Unassigned Prefix
37	K3K	Unassigned Prefix
38	K3L	Highmark Blue Shield
39	K3M	Anthem Blue Cross of California
40	K3N	Blue Cross Blue Shield of Texas
41	K3O	Unassigned Prefix
42	K3P	Anthem Blue Cross Blue Shield of Virginia
43	K3Q	Anthem Blue Cross Blue Shield of Georgia
44	K3R	Highmark Blue Shield
45	K3S	Premera Blue Cross
46	K3T	Anthem Blue Cross of California
47	K3U	Blue Cross Blue Shield of Illinois
48	K3V	Regence Blue Cross Blue Shield
49	K3W	Unassigned Prefix
50	K3X	Unassigned Prefix
51	K3Y	Unassigned Prefix
52	K3Z	Anthem Blue Cross Blue Shield of Georgia
53	K4A	Empire Blue Cross Blue Shield
54	K4B	Anthem Blue Cross Blue Shield of Indiana
55	K4C	Blue Cross Blue Shield of Michigan
56	K4D	Anthem Blue Cross Blue Shield of Ohio
57	K4E	Unassigned Prefix
58	K4F	Regence Blue Cross Blue Shield
59	K4G	Carefirst Blue Cross Blue Shield
60	K4H	Unassigned Prefix
61	K4I	Unassigned Prefix
62	K4J	Unassigned Prefix
63	K4K	Unassigned Prefix
64	K4L	Anthem Blue Cross Blue Shield of Ohio
65	K4M	Empire Blue Cross Blue Shield
66	K4N	Blue Cross of Massachusetts
67	K4O	Unassigned Prefix
68	K4P	Unassigned Prefix
69	K4Q	Unassigned Prefix
70	K4R	Empire Blue Cross Blue Shield
71	K4S	Blue Cross of Massachusetts
72	K4T	Carefirst Blue Cross Blue Shield
73	K4U	Blue Cross Blue Shield of Illinois
74	K4V	Blue Cross Blue Shield of Texas
75	K4W	Unassigned Prefix
76	K4X	Unassigned Prefix
77	K4Y	Unassigned Prefix
78	K4Z	Anthem Blue Cross Blue Shield of Indiana
79	K5A	Anthem Blue Cross of California
80	K5B	Anthem Blue Cross Blue Shield of Ohio
81	K5C	Anthem Blue Cross Blue Shield of Indiana
82	K5D	Blue Cross Blue Shield of Illinois
83	K5E	Unassigned Prefix
84	K5F	Anthem Blue Cross Blue Shield of Indiana
85	K5G	Unassigned Prefix
86	K5H	Unassigned Prefix
87	K5I	Unassigned Prefix
88	K5J	Unassigned Prefix
89	K5K	Unassigned Prefix
90	K5L	Unassigned Prefix
91	K5M	Unassigned Prefix
92	K5N	Anthem Blue Cross Blue Shield of Indiana
93	K5O	Unassigned Prefix
94	K5P	Blue Cross Blue Shield of Illinois
95	K5Q	Unassigned Prefix
96	K5R	Unassigned Prefix
97	K5S	Unassigned Prefix
98	K5T	Unassigned Prefix
99	K5U	Unassigned Prefix
100	K5V	Blue Cross Blue Shield of Texas
101	K5W	Unassigned Prefix
102	K5X	Unassigned Prefix
103	K5Y	Anthem Blue Cross Blue Shield of Kentucky
104	K5Z	Unassigned Prefix
105	K6A	Empire Blue Cross Blue Shield
106	K6B	Anthem Blue Cross Blue Shield of Georgia
107	K6C	Empire Blue Cross Blue Shield
108	K6D	Unassigned Prefix
109	K6E	Unassigned Prefix
110	K6F	Unassigned Prefix
111	K6G	Unassigned Prefix
112	K6H	Unassigned Prefix
113	K6I	Unassigned Prefix
114	K6J	Unassigned Prefix
115	K6K	Unassigned Prefix
116	K6L	Unassigned Prefix
117	K6M	Anthem Blue Cross Blue Shield of Virginia
118	K6N	Unassigned Prefix
119	K6O	Unassigned Prefix
120	K6P	Unassigned Prefix
121	K6Q	Unassigned Prefix
122	K6R	Unassigned Prefix
123	K6S	Unassigned Prefix
124	K6T	Unassigned Prefix
125	K6U	Unassigned Prefix
126	K6V	Unassigned Prefix
127	K6W	Unassigned Prefix
128	K6X	Unassigned Prefix
129	K6Y	Unassigned Prefix
130	K6Z	Unassigned Prefix
131	K7A	Anthem Blue Cross Blue Shield of Indiana
132	K7B	Anthem Blue Cross Blue Shield of Indiana
133	K7C	Anthem Blue Cross Blue Shield of Indiana
134	K7D	Anthem Blue Cross Blue Shield of Indiana
135	K7E	Anthem Blue Cross Blue Shield of Indiana
136	K7F	Anthem Blue Cross Blue Shield of Indiana
137	K7G	Unassigned Prefix
138	K7H	Unassigned Prefix
139	K7I	Unassigned Prefix
140	K7J	Unassigned Prefix
141	K7K	Unassigned Prefix
142	K7L	Unassigned Prefix
143	K7M	Anthem Blue Cross Blue Shield of Ohio
144	K7N	Anthem Blue Cross Blue Shield of Indiana
145	K7O	Unassigned Prefix
146	K7P	Unassigned Prefix
147	K7Q	Unassigned Prefix
148	K7R	Unassigned Prefix
149	K7S	Regence Blue Cross Blue Shield
150	K7T	Unassigned Prefix
151	K7U	Unassigned Prefix
152	K7V	Unassigned Prefix
153	K7W	Unassigned Prefix
154	K7X	Blue Cross Blue Shield of Texas
155	K7Y	Unassigned Prefix
156	K7Z	Unassigned Prefix
157	K8A	Anthem Blue Cross Blue Shield of Colorado
158	K8B	Unassigned Prefix
159	K8C	Anthem Blue Cross of California
160	K8D	Unassigned Prefix
161	K8E	Unassigned Prefix
162	K8F	Unassigned Prefix
163	K8G	Unassigned Prefix
164	K8H	Unassigned Prefix
165	K8I	Unassigned Prefix
166	K8J	Unassigned Prefix
167	K8K	Unassigned Prefix
168	K8L	Unassigned Prefix
169	K8M	Anthem Blue Cross of California
170	K8N	Unassigned Prefix
171	K8O	Unassigned Prefix
172	K8P	Blue Cross Blue Shield of Texas
173	K8Q	Unassigned Prefix
174	K8R	Unassigned Prefix
175	K8S	Unassigned Prefix
176	K8T	Unassigned Prefix
177	K8U	Unassigned Prefix
178	K8V	Unassigned Prefix
179	K8W	Unassigned Prefix
180	K8X	Unassigned Prefix
181	K8Y	Blue Cross Blue Shield of Arizona
182	K8Z	Blue Cross Blue Shield of Arizona
183	K9A	Anthem Blue Cross Blue Shield of Georgia
184	K9B	Anthem Blue Cross Blue Shield of Georgia
185	K9C	Anthem Blue Cross Blue Shield of Georgia
186	K9D	Anthem Blue Cross Blue Shield of Indiana
187	K9E	Unassigned Prefix
188	K9F	Unassigned Prefix
189	K9G	Anthem Blue Cross Blue Shield of Georgia
190	K9H	Unassigned Prefix
191	K9I	Unassigned Prefix
192	K9J	Unassigned Prefix
193	K9K	Anthem Blue Cross Blue Shield of Indiana
194	K9L	Unassigned Prefix
195	K9M	Anthem Blue Cross Blue Shield of Indiana
196	K9N	Anthem Blue Cross Blue Shield of Georgia
197	K9O	Unassigned Prefix
198	K9P	Unassigned Prefix
199	K9Q	Unassigned Prefix
200	K9R	Unassigned Prefix
201	K9S	Unassigned Prefix
202	K9T	Unassigned Prefix
203	K9U	Unassigned Prefix
204	K9V	Unassigned Prefix
205	K9W	Anthem Blue Cross Blue Shield of Indiana
206	K9X	Unassigned Prefix
207	K9Y	Regence Blue Cross Blue Shield
208	K9Z	Unassigned Prefix

Some identification cards may not include an alpha prefix, which may indicate that the claim filing instructions for these type policies are different. We suggest that you verify claim filing instructions during the time eligibility information is obtained. If not, please follow the instructions on the back of the member’s ID card or contact the plan directly. Member eligibility can be obtained at 1 (800) 676-BLUE (2583). Once connected, you will then simply provide the alpha prefix and the operator will then route you to the member’s plan. Helpful Tips Related to the Alpha Prefix:

1. Do not omit or randomly select an alpha prefix.
2. Do not substitute another Blue Cross Blue Shield Member’s prefix.
3. Include the alpha prefix and all alpha numeric characters preceding the alpha prefix on all correspondence and claims submitted to Blue Cross Blue Shield of Texas.
4. The alpha prefix is always three letters followed by the member’s ID number which can be from 6 up to 14 characters total.
5. If possible, make copies of the member’s ID card (front and back) for your records.
6. We recommend that you obtain a copy of the ID card any time there has been a coverage or policy change. If there are no changes, we suggest that you obtain card copies annually.

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