Diagnostic behaviour of general practitioners when suspecting Lyme disease: a database study from 2010-2015

BMC Primary Care

Table 4 Search strategy in electronic medical records

Search term or code	Explanation
I. Free text
Teek	Tick
Teke^b	Tick
Lyme	Lyme Borreliosis
Ery^bMigr^b	Erythema migrans
EM	Erythema migrans
E.M.	Erythema migrans
Bor^belia	Lyme Borreliosis
II. ICPC-1 code
S12	Insect sting
S12.01	Tick bite
A78	Other infectious diseases
A78.05	Lyme Borreliosis
III. Diagnostic test code^a
125	Borrelia Burgdorferi antibodies IgA
126	Borrelia B. confirmation test
127	Borrelia Burgdorferi antibodies IgG
2889	Borrelia Burgdorferi antibodies IgG liquor
128	Borrelia Burgdorferi antibodies
2404	Borrelia Burgdorferi index per total antibodies IgG/IgM
129	Borrelia Burgdorferi IgM
3104	Borrelia Burgdorferi antibodies IgM (1e mnt,gprd)
3434	Borrelia Burgdorferi antibodies IgM (quantitative)
2891	Borrelia Burgdorferi antibodies IgM liquor
2167	Borrelia Burgdorferi C6 protein
3101	Borrelia Burgdorferi C6 protein (quantitative)
3102	Borrelia Burgdorferi C6 protein (1e mnt, gprd)
2890	Borrelia Burgdorferi C6 protein liquor
2226	Borrelia Burgdorferi antibodies IgG (Westernblot)
2227	Borrelia Burgdorferi antibodies IgM (Westernblot)

Our search strategy was based on selected International Classification Primary Care (ICPC-1) Codes, words in free text annotations, and requests for serological tests for Lyme disease as recorded in routine primary care in the electronical medical records
ICPC-1 International Classification of Primary Care
^aTests were included when requested 8 days before or after a contact
^bWild card code, to include any variation in typing following trunk

ISSN: 2731-4553