ICD-10-CM > F01-F99 > F40-F48 > F43 > F43.1 F43.1 Post-traumatic stress disorder (PTSD) Non-Billable/Non-Specific Applicable To Traumatic neurosis Codes F43.10Post-traumatic stress disorder, unspecifiedF43.11Post-traumatic stress disorder, acuteF43.12Post-traumatic stress disorder, chronic