BCBS Alpha Numeric Prefix List (S2A to S9Z)

Today you will find The BCBS Alpha Numeric Prefix List from S2A to S9Z. 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	S2A	Blue Cross Blue Shield of Western New York
2	S2B	Blue Cross Blue Shield of Illinois
3	S2C	Blue Cross Blue Shield of Illinois
4	S2D	Blue Cross Blue Shield of Texas
5	S2E	Blue Cross Blue Shield of Illinois
6	S2F	Blue Cross Blue Shield of Illinois
7	S2G	Blue Cross Blue Shield of Texas
8	S2H	Blue Cross Blue Shield of Alabama
9	S2I	Anthem Blue Cross Blue Shield of Wisconsin
10	S2J	Blue Cross Blue Shield of Illinois
11	S2K	Blue Cross Blue Shield of Texas
12	S2L	Blue Cross Blue Shield of Illinois
13	S2M	Regence Blue Cross Blue Shield
14	S2N	Blue Cross Blue Shield of Illinois
15	S2O	Blue Cross Blue Shield of North Carolina
16	S2P	Blue Cross Blue Shield of Illinois
17	S2Q	Blue Cross of Massachusetts
18	S2R	Blue Cross Blue Shield of Illinois
19	S2S	Independence Blue Cross
20	S2T	Blue Cross Blue Shield of Illinois
21	S2U	Anthem Blue Cross of California
22	S2V	Blue Cross Blue Shield of Illinois
23	S2W	Blue Cross Blue Shield of Illinois
24	S2X	Blue Cross Blue Shield of Texas
25	S2Y	Blue Cross Blue Shield of Illinois
26	S2Z	Blue Cross Blue Shield of Texas
27	S3A	Blue Shield of Northeastern New York
28	S3B	Premera Blue Cross Blue Shield of Alaska
29	S3C	Independence Blue Cross
30	S3D	Blue Cross Blue Shield of Illinois
31	S3E	Blue Cross Blue Shield of Illinois
32	S3F	Blue Cross Blue Shield of Illinois
33	S3G	Premera Blue Cross
34	S3H	Blue Cross Blue Shield of Texas
35	S3I	Anthem Blue Cross Blue Shield of Georgia
36	S3J	Carefirst Blue Cross Blue Shield
37	S3K	Blue Cross Blue Shield of Texas
38	S3L	Blue Cross Blue Shield of Illinois
39	S3M	Blue Cross Blue Shield of Illinois
40	S3N	Highmark Blue Cross Blue Shield
41	S3O	Highmark Blue Shield
42	S3P	Blue Cross Blue Shield of Illinois
43	S3Q	Anthem Blue Cross of California
44	S3R	Highmark Blue Cross Blue Shield
45	S3S	Independence Blue Cross
46	S3T	Blue Cross Blue Shield of Western New York
47	S3U	Highmark Blue Cross Blue Shield of Delaware
48	S3V	Highmark Blue Shield
49	S3W	Anthem Blue Cross Blue Shield of Georgia
50	S3X	Anthem Blue Cross of California
51	S3Y	Blue Cross of Massachusetts
52	S3Z	Blue Cross Blue Shield of Arizona
53	S4A	Premera Blue Cross
54	S4B	Premera Blue Cross Blue Shield of Alaska
55	S4C	Premera Blue Cross
56	S4D	Premera Blue Cross Blue Shield of Alaska
57	S4E	Premera Blue Cross Blue Shield of Alaska
58	S4F	Blue Cross Blue Shield of Illinois
59	S4G	Blue Cross of Massachusetts
60	S4H	Anthem Blue Cross Blue Shield of Missouri
61	S4I	Independence Blue Cross
62	S4J	Carefirst Blue Cross Blue Shield
63	S4K	Independence Blue Cross
64	S4L	Blue Cross Blue Shield of Illinois
65	S4M	Blue Cross Blue Shield of Illinois
66	S4N	Blue Cross Blue Shield of Illinois
67	S4O	Unassigned Prefix
68	S4P	Blue Cross Blue Shield of Illinois
69	S4Q	Premera Blue Cross Blue Shield of Alaska
70	S4R	Empire Blue Cross Blue Shield
71	S4S	Independence Blue Cross
72	S4T	Carefirst Blue Cross Blue Shield
73	S4U	Blue Cross Blue Shield of Texas
74	S4V	Premera Blue Cross
75	S4W	Regence Blue Cross Blue Shield
76	S4X	Blue Cross Blue Shield of Texas
77	S4Y	Premera Blue Cross Blue Shield of Alaska
78	S4Z	Carefirst Blue Cross Blue Shield
79	S5A	Blue Cross Blue Shield of Texas
80	S5B	Anthem Blue Cross Blue Shield of Colorado
81	S5C	Blue Cross of Massachusetts
82	S5D	Anthem Blue Cross of California
83	S5E	Blue Cross Blue Shield of Texas
84	S5F	Unassigned Prefix
85	S5G	Anthem Blue Cross Blue Shield of Indiana
86	S5H	Anthem Blue Cross Blue Shield of Missouri
87	S5I	Unassigned Prefix
88	S5J	Anthem Blue Cross Blue Shield of Connecticut
89	S5K	Anthem Blue Cross Blue Shield of Connecticut
90	S5L	Blue Cross Blue Shield of Illinois
91	S5M	Blue Cross Blue Shield of Illinois
92	S5N	Blue Cross Blue Shield of Texas
93	S5O	Unassigned Prefix
94	S5P	Blue Cross Blue Shield of Minnesota
95	S5Q	Premera Blue Cross Blue Shield of Alaska
96	S5R	Anthem Blue Cross Blue Shield of Georgia
97	S5S	Independence Blue Cross
98	S5T	Blue Cross Blue Shield of Illinois
99	S5U	Blue Cross Blue Shield of Texas
100	S5V	Capital Blue Cross
101	S5W	Premera Blue Cross Blue Shield of Alaska
102	S5X	Anthem Blue Cross Blue Shield of Connecticut
103	S5Y	Anthem Blue Cross Blue Shield of Connecticut
104	S5Z	Anthem Blue Cross Blue Shield of Connecticut
105	S6A	Blue Cross Blue Shield of Texas
106	S6B	Blue Cross Blue Shield of Illinois
107	S6C	Anthem Blue Cross Blue Shield of Virginia
108	S6D	Anthem Blue Cross Blue Shield of Missouri
109	S6E	Blue Cross Blue Shield of Texas
110	S6F	Premera Blue Cross Blue Shield of Alaska
111	S6G	Anthem Blue Cross Blue Shield of Connecticut
112	S6H	Blue Cross Blue Shield of Minnesota
113	S6I	Unassigned Prefix
114	S6J	Anthem Blue Cross Blue Shield of Wisconsin
115	S6K	Anthem Blue Cross Blue Shield of Ohio
116	S6L	Blue Cross Blue Shield of Texas
117	S6M	Anthem Blue Cross Blue Shield of Kentucky
118	S6N	Blue Cross Blue Shield of Texas
119	S6O	Unassigned Prefix
120	S6P	Regence Blue Cross Blue Shield
121	S6Q	Empire Blue Cross Blue Shield
122	S6R	Anthem Blue Cross Blue Shield of Maine
123	S6S	Independence Blue Cross
124	S6T	Carefirst Blue Cross Blue Shield
125	S6U	Blue Cross Blue Shield of Texas
126	S6V	Anthem Blue Cross of California
127	S6W	Regence Blue Cross Blue Shield
128	S6X	Anthem Blue Cross of California
129	S6Y	Blue Cross Blue Shield of Illinois
130	S6Z	Anthem Blue Cross Blue Shield of Missouri
131	S7A	Anthem Blue Cross Blue Shield of Missouri
132	S7B	Anthem Blue Cross Blue Shield of Missouri
133	S7C	Anthem Blue Cross Blue Shield of Missouri
134	S7D	Anthem Blue Cross Blue Shield of Wisconsin
135	S7E	Regence Blue Cross Blue Shield
136	S7F	Anthem Blue Cross of California
137	S7G	Anthem Blue Cross Blue Shield of Virginia
138	S7H	Blue Cross Blue Shield of Illinois
139	S7I	Unassigned Prefix
140	S7J	Horizon Blue Cross Blue Shield
141	S7K	Horizon Blue Cross Blue Shield
142	S7L	Regence Blue Cross Blue Shield
143	S7M	Carefirst Blue Cross Blue Shield
144	S7N	Unassigned Prefix
145	S7O	Unassigned Prefix
146	S7P	Blue Cross Blue Shield of Illinois
147	S7Q	Anthem Blue Cross Blue Shield of Missouri
148	S7R	Anthem Blue Cross of California
149	S7S	Independence Blue Cross
150	S7T	Blue Cross Blue Shield of Illinois
151	S7U	Blue Cross Blue Shield of Texas
152	S7V	Anthem Blue Cross Blue Shield of Georgia
153	S7W	Premera Blue Cross Blue Shield of Alaska
154	S7X	Blue Cross Blue Shield of Illinois
155	S7Y	Premera Blue Cross Blue Shield of Alaska
156	S7Z	Anthem Blue Cross of California
157	S8A	Anthem Blue Cross Blue Shield of Ohio
158	S8B	Blue Cross Blue Shield of Texas
159	S8C	Empire Blue Cross Blue Shield
160	S8D	Anthem Blue Cross Blue Shield of Indiana
161	S8E	Premera Blue Cross Blue Shield of Alaska
162	S8F	Anthem Blue Cross Blue Shield of Indiana
163	S8G	Anthem Blue Cross Blue Shield of Indiana
164	S8H	Anthem Blue Cross Blue Shield of Indiana
165	S8I	Unassigned Prefix
166	S8J	Anthem Blue Cross Blue Shield of Indiana
167	S8K	Premera Blue Cross Blue Shield of Alaska
168	S8L	Blue Cross Blue Shield of Illinois
169	S8M	Blue Cross Blue Shield of Texas
170	S8N	Blue Cross Blue Shield of Minnesota
171	S8O	Unassigned Prefix
172	S8P	Anthem Blue Cross Blue Shield of Indiana
173	S8Q	Anthem Blue Cross Blue Shield of Indiana
174	S8R	Blue Cross Blue Shield of Texas
175	S8S	Independence Blue Cross
176	S8T	Anthem Blue Cross Blue Shield of Missouri
177	S8U	Unassigned Prefix
178	S8V	Anthem Blue Cross Blue Shield of Indiana
179	S8W	Anthem Blue Cross Blue Shield of Indiana
180	S8X	Anthem Blue Cross Blue Shield of Indiana
181	S8Y	Highmark Blue Cross Blue Shield
182	S8Z	Anthem Blue Cross Blue Shield of Indiana
183	S9A	Anthem Blue Cross Blue Shield of Missouri
184	S9B	Premera Blue Cross Blue Shield of Alaska
185	S9C	Blue Cross Blue Shield of Texas
186	S9D	Anthem Blue Cross Blue Shield of Indiana
187	S9E	Carefirst Blue Cross Blue Shield
188	S9F	Anthem Blue Cross Blue Shield of Missouri
189	S9G	Blue Cross Blue Shield of Texas
190	S9H	Regence Blue Cross Blue Shield
191	S9I	Unassigned Prefix
192	S9J	Anthem Blue Cross Blue Shield of Missouri
193	S9K	Regence Blue Cross Blue Shield
194	S9L	Regence Blue Cross Blue Shield
195	S9M	Blue Cross Blue Shield of Michigan
196	S9N	Blue Cross Blue Shield of Texas
197	S9O	Unassigned Prefix
198	S9P	Anthem Blue Cross of California
199	S9Q	Anthem Blue Cross Blue Shield of Missouri
200	S9R	Anthem Blue Cross Blue Shield of Ohio
201	S9S	Independence Blue Cross
202	S9T	Anthem Blue Cross Blue Shield of Kentucky
203	S9U	Unassigned Prefix
204	S9V	Anthem Blue Cross Blue Shield of Missouri
205	S9W	Anthem Blue Cross Blue Shield of Missouri
206	S9X	Anthem Blue Cross Blue Shield of Missouri
207	S9Y	Unassigned Prefix
208	S9Z	Anthem Blue Cross Blue Shield of Connecticut

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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