Table 1.
Table of diagnosis codes for STIs included in the study.
| STI | Diagnosis Codes from HCUP’s CCSR and CCS | |
|---|---|---|
| ICD-9-CM | ICD-10-CM | |
| Chlamydia | 076x, 078.88, 079.98, 079.88, 099.1, 099.41, 099.5x | A55x, A56x, A71x, A74x |
| Gonorrhea | 098x | A54x |
| Syphilis | 090x–097x | A51x–A53x |
| HPV | 078.11, 795.05, 795.09, 795.15, 795.19, 796.75, 796.79 | A63.0, R85.81x, R85.82x, R87.81x, R87.82x |
| Trichomoniasis | 131x | A59x |
| Chancroid | 099.0 | A57x |
| Genital herpes | 054.1x | A60x |
| Unspecified STI | 099.9 | A64 |
| Reiter’s disease | 099.3 | M02.3 |
| Granuloma inguinale | 099.2 | A58 |
CCS: Clinical Classifications Software; CCSR: Clinical Classifications Software Refined; ICD-9-CM: International Classification of Diseases, Ninth Revision, Clinical Modification; ICD-10-CM: International Classification of Diseases, Tenth Revision, Clinical Modification; HCUP: Healthcare Cost and Utilization; HPV: Human papillomavirus.