BCBS Alpha Numeric Prefix List (A2A To A9Z)

The alpha 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. Below you will find The BCBS Alpha Numeric Prefix List from A2A to A9Z

S.No	Prefix	BCBS Company Name
1	A2A	Blue Cross Blue Shield of Texas
2	A2B	Blue Cross Blue Shield of Texas
3	A2C	Blue Cross Blue Shield of Illinois
4	A2D	Blue Cross Blue Shield of Texas
5	A2E	Blue Cross Blue Shield of Texas
6	A2F	Blue Cross Blue Shield of Texas
7	A2G	Blue Cross Blue Shield of Illinois
8	A2H	Blue Cross Blue Shield of Texas
9	A2I	Capital Blue Cross
10	A2J	Blue Cross Blue Shield of Illinois
11	A2K	Capital Blue Cross
12	A2L	Capital Blue Cross
13	A2M	Capital Blue Cross
14	A2N	Capital Blue Cross
15	A2O	Carefirst Blue Cross Blue Shield
16	A2P	Capital Blue Cross
17	A2Q	Horizon Blue Cross Blue Shield
18	A2R	Capital Blue Cross
19	A2S	Capital Blue Cross
20	A2T	Premera Blue Cross
21	A2U	Highmark Blue Cross Blue Shield
22	A2V	Carefirst Blue Cross Blue Shield
23	A2W	Highmark Blue Cross Blue Shield
24	A2X	Carefirst Blue Cross Blue Shield
25	A2Y	Blue Cross Blue Shield of Texas
26	A2Z	Carefirst Blue Cross Blue Shield
27	A3A	Blue Cross of Massachusetts
28	A3B	Carefirst Blue Cross Blue Shield
29	A3C	Arkansas Blue Cross
30	A3D	Carefirst Blue Cross Blue Shield
31	A3E	Capital Blue Cross
32	A3F	Carefirst Blue Cross Blue Shield
33	A3G	Blue Cross Blue Shield of Illinois
34	A3H	Capital Blue Cross
35	A3I	Capital Blue Cross
36	A3J	Blue Cross Blue Shield of Illinois
37	A3K	Blue Cross Blue Shield of Texas
38	A3L	Highmark Blue Cross Blue Shield
39	A3M	Regence Blue Cross Blue Shield
40	A3N	Blue Cross Blue Shield of Illinois
41	A3O	Carefirst Blue Cross Blue Shield
42	A3P	Blue Cross Blue Shield of Minnesota
43	A3Q	Horizon Blue Cross Blue Shield
44	A3R	Capital Blue Cross
45	A3S	Capital Blue Cross
46	A3T	Blue Cross Blue Shield of Texas
47	A3U	Carefirst Blue Cross Blue Shield
48	A3V	Highmark Blue Cross Blue Shield
49	A3W	Blue Cross Blue Shield of Minnesota
50	A3X	Carefirst Blue Cross Blue Shield
51	A3Y	Blue Cross Blue Shield of Texas
52	A3Z	Horizon Blue Cross Blue Shield
53	A4A	Carefirst Blue Cross Blue Shield
54	A4B	Carefirst Blue Cross Blue Shield
55	A4C	Regence Blue Cross Blue Shield
56	A4D	Blue Cross Blue Shield of Illinois
57	A4E	Capital Blue Cross
58	A4F	Blue Cross Blue Shield of Michigan
59	A4G	Capital Blue Cross
60	A4H	Carefirst Blue Cross Blue Shield
61	A4I	Carefirst Blue Cross Blue Shield
62	A4J	Blue Cross Blue Shield of Illinois
63	A4K	Horizon Blue Cross Blue Shield
64	A4L	Carefirst Blue Cross Blue Shield
65	A4M	Capital Blue Cross
66	A4N	Carefirst Blue Cross Blue Shield
67	A4O	Carefirst Blue Cross Blue Shield
68	A4P	Blue Cross Blue Shield of Illinois
69	A4Q	Capital Blue Cross
70	A4R	Carefirst Blue Cross Blue Shield
71	A4S	Regence Blue Cross Blue Shield
72	A4T	Regence Blue Cross Blue Shield
73	A4U	Carefirst Blue Cross Blue Shield
74	A4V	Carefirst Blue Cross Blue Shield
75	A4W	Carefirst Blue Cross Blue Shield
76	A4X	Carefirst Blue Cross Blue Shield
77	A4Y	Horizon Blue Cross Blue Shield
78	A4Z	Capital Blue Cross
79	A5A	Carefirst Blue Cross Blue Shield
80	A5B	Carefirst Blue Cross Blue Shield
81	A5C	Capital Blue Cross
82	A5D	Carefirst Blue Cross Blue Shield
83	A5E	Capital Blue Cross
84	A5F	Carefirst Blue Cross Blue Shield
85	A5G	Capital Blue Cross
86	A5H	Carefirst Blue Cross Blue Shield
87	A5I	Carefirst Blue Cross Blue Shield
88	A5J	Capital Blue Cross
89	A5K	Carefirst Blue Cross Blue Shield
90	A5L	Blue Cross Blue Shield of Vermont
91	A5M	Regence Blue Cross Blue Shield
92	A5N	Capital Blue Cross
93	A5O	Capital Blue Cross
94	A5P	Carefirst Blue Cross Blue Shield
95	A5Q	Capital Blue Cross
96	A5R	Anthem Blue Cross of California
97	A5S	Blue Cross Blue Shield of Tennessee
98	A5T	Carefirst Blue Cross Blue Shield
99	A5U	Carefirst Blue Cross Blue Shield
100	A5V	Carefirst Blue Cross Blue Shield
101	A5W	Horizon Blue Cross Blue Shield
102	A5X	Unassigned Prefix
103	A5Y	Horizon Blue Cross Blue Shield
104	A5Z	Carefirst Blue Cross Blue Shield
105	A6A	Anthem Blue Cross Blue Shield of Georgia
106	A6B	Carefirst Blue Cross Blue Shield
107	A6C	Regence Blue Cross Blue Shield
108	A6D	Blue Cross Blue Shield of Illinois
109	A6E	Capital Blue Cross
110	A6F	Blue Cross Blue Shield of Illinois
111	A6G	Carefirst Blue Cross Blue Shield
112	A6H	Carefirst Blue Cross Blue Shield
113	A6I	Capital Blue Cross
114	A6J	Capital Blue Cross
115	A6K	Carefirst Blue Cross Blue Shield
116	A6L	Carefirst Blue Cross Blue Shield
117	A6M	Anthem Blue Cross Blue Shield of Virginia
118	A6N	Carefirst Blue Cross Blue Shield
119	A6O	Capital Blue Cross
120	A6P	Blue Cross Blue Shield of Minnesota
121	A6Q	Anthem Blue Cross of California
122	A6R	Carefirst Blue Cross Blue Shield
123	A6S	Carefirst Blue Cross Blue Shield
124	A6T	Carefirst Blue Cross Blue Shield
125	A6U	Capital Blue Cross
126	A6V	Carefirst Blue Cross Blue Shield
127	A6W	Carefirst Blue Cross Blue Shield
128	A6X	Carefirst Blue Cross Blue Shield
129	A6Y	Carefirst Blue Cross Blue Shield
130	A6Z	Anthem Blue Cross Blue Shield of Nevada
131	A7A	Carefirst Blue Cross Blue Shield
132	A7B	Carefirst Blue Cross Blue Shield
133	A7C	Regence Blue Cross Blue Shield
134	A7D	Carefirst Blue Cross Blue Shield
135	A7E	Regence Blue Cross Blue Shield
136	A7F	Carefirst Blue Cross Blue Shield
137	A7G	Blue Cross Blue Shield of Illinois
138	A7H	Carefirst Blue Cross Blue Shield
139	A7I	Carefirst Blue Cross Blue Shield
140	A7J	Capital Blue Cross
141	A7K	Blue Cross Blue Shield of Illinois
142	A7L	Anthem Blue Cross Blue Shield of Indiana
143	A7M	Blue Cross Blue Shield of Illinois
144	A7N	Carefirst Blue Cross Blue Shield
145	A7O	Carefirst Blue Cross Blue Shield
146	A7P	Capital Blue Cross
147	A7Q	Carefirst Blue Cross Blue Shield
148	A7R	Carefirst Blue Cross Blue Shield
149	A7S	Blue Cross of Massachusetts
150	A7T	Blue Cross Blue Shield of Vermont
151	A7U	Carefirst Blue Cross Blue Shield
152	A7V	Carefirst Blue Cross Blue Shield
153	A7W	Carefirst Blue Cross Blue Shield
154	A7X	Blue Cross Blue Shield of North Dakota
155	A7Y	Carefirst Blue Cross Blue Shield
156	A7Z	Anthem Blue Cross Blue Shield of Virginia
157	A8A	Blue Cross Blue Shield of Minnesota
158	A8B	Blue Cross Blue Shield of Illinois
159	A8C	Blue Cross Blue Shield of Illinois
160	A8D	Anthem Blue Cross of California
161	A8E	Carefirst Blue Cross Blue Shield
162	A8F	Highmark Blue Shield
163	A8G	Anthem Blue Cross of California
164	A8H	Carefirst Blue Cross Blue Shield
165	A8I	Anthem Blue Cross Blue Shield of Connecticut
166	A8J	Carefirst Blue Cross Blue Shield
167	A8K	Highmark Blue Cross Blue Shield
168	A8L	Highmark Blue Cross Blue Shield
169	A8M	Anthem Blue Cross Blue Shield of Virginia
170	A8N	Carefirst Blue Cross Blue Shield
171	A8O	Anthem Blue Cross Blue Shield of Connecticut
172	A8P	Capital Blue Cross
173	A8Q	Anthem Blue Cross Blue Shield of Connecticut
174	A8R	Blue Cross Blue Shield of Texas
175	A8S	Anthem Blue Cross Blue Shield of Connecticut
176	A8T	Blue Cross Blue Shield of Illinois
177	A8U	Anthem Blue Cross Blue Shield of Connecticut
178	A8V	Anthem Blue Cross Blue Shield of Connecticut
179	A8W	Carefirst Blue Cross Blue Shield
180	A8X	Carefirst Blue Cross Blue Shield
181	A8Y	Anthem Blue Cross Blue Shield of Connecticut
182	A8Z	Anthem Blue Cross Blue Shield of Connecticut
183	A9A	Anthem Blue Cross Blue Shield of Connecticut
184	A9B	Regence Blue Cross Blue Shield
185	A9C	Anthem Blue Cross Blue Shield of Connecticut
186	A9D	Blue Cross Blue Shield of Minnesota
187	A9E	Blue Cross Blue Shield of Illinois
188	A9F	Blue Cross Blue Shield of Minnesota
189	A9G	Regence Blue Cross Blue Shield
190	A9H	Blue Cross Blue Shield of Minnesota
191	A9I	Anthem Blue Cross Blue Shield of Wisconsin
192	A9J	Carefirst Blue Cross Blue Shield
193	A9K	Blue Cross Blue Shield of Minnesota
194	A9L	Blue Cross Blue Shield of Minnesota
195	A9M	Anthem Blue Cross Blue Shield of Colorado
196	A9N	Blue Cross Blue Shield of Minnesota
197	A9O	Anthem Blue Cross Blue Shield of Virginia
198	A9P	Premera Blue Cross Blue Shield of Alaska
199	A9Q	Anthem Blue Cross of California
200	A9R	Carefirst Blue Cross Blue Shield
201	A9S	Carefirst Blue Cross Blue Shield
202	A9T	Anthem Blue Cross Blue Shield of Virginia
203	A9U	Anthem Blue Cross of California
204	A9V	Blue Cross Blue Shield of Illinois
205	A9W	Blue Cross of Massachusetts
206	A9X	Blue Cross Blue Shield of Texas
207	A9Y	Anthem Blue Cross of California
208	A9Z	Highmark Blue Cross Blue Shield

Insurance Cards without an Alpha 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:

• Do not omit or randomly select an alpha prefix.
• Do not substitute another Blue Cross Blue Shield Member’s prefix.
• 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.
• The alpha prefix is always three letters followed by the member’s ID number which can be from 6 up to 14 characters total.
• If possible, make copies of the member’s ID card (front and back) for your records.
• 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.

About us

Billing Executive – a Medical Billing and Coding Knowledge Base for Physicians, Office staff, Medical Billers and Coders, including resources pertaining to HCPCS Codes, CPT Codes, ICD-10 billing codes, Modifiers, POS Codes, Revenue Codes, Billing Errors, Denials and Rejections.

Read More:

BCBS Phone Numbers by Plan and State

United Healthcare Costumer Services information

Cigna Claims Processing Contact information