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ICD-10 Guide
ICD-10 CodesF43.1

F43.1

Billable

Post-traumatic stress disorder (PTSD)

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 F43.1 is a billable code used to indicate a diagnosis of post-traumatic stress disorder (ptsd).

Key Diagnostic Point:

Post-traumatic stress disorder (PTSD) is a mental health condition that can develop after an individual has been exposed to a traumatic event. This may include experiences such as combat exposure, sexual assault, natural disasters, or serious accidents. Symptoms of PTSD can be categorized into four main clusters: intrusive memories (e.g., flashbacks, nightmares), avoidance (e.g., avoiding reminders of the trauma), negative changes in mood and cognition (e.g., persistent negative beliefs, feelings of detachment), and heightened arousal (e.g., hypervigilance, exaggerated startle response). The diagnosis of PTSD requires that symptoms persist for more than one month and cause significant distress or impairment in social, occupational, or other important areas of functioning. Treatment often involves psychotherapy, such as cognitive-behavioral therapy (CBT), and may include medications like SSRIs. Understanding the nuances of PTSD is crucial for accurate coding and effective treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of symptoms that can overlap with other mental health disorders.
  • Need for thorough documentation of trauma history and symptom duration.
  • Potential for comorbid conditions such as depression or anxiety disorders.
  • Variability in patient presentation and subjective reporting of symptoms.

Audit Risk Factors

  • Inadequate documentation of the traumatic event.
  • Failure to document the duration of symptoms.
  • Misclassification of PTSD symptoms as other anxiety disorders.
  • Lack of evidence for functional impairment.

Specialty Focus

Medical Specialties

Psychiatry

Documentation Requirements

Detailed history of trauma, symptom assessment, and treatment plan.

Common Clinical Scenarios

Patients presenting with flashbacks, avoidance behaviors, or severe anxiety following trauma.

Billing Considerations

Ensure that the documentation reflects the chronicity and severity of symptoms for accurate coding.

Primary Care

Documentation Requirements

Screening for PTSD symptoms, referral notes, and treatment follow-up.

Common Clinical Scenarios

Patients with unexplained physical symptoms or anxiety who may have a history of trauma.

Billing Considerations

Primary care providers should be aware of the signs of PTSD and document any referrals to mental health specialists.

Coding Guidelines

Inclusion Criteria

Use F43.1 When
  • According to ICD
  • 10 guidelines, PTSD is coded when symptoms persist for more than one month following exposure to a traumatic event
  • It is important to document the specific symptoms and their impact on the patient's functioning
  • 0) and other anxiety disorders unless they are comorbid

Exclusion Criteria

Do NOT use F43.1 When
  • Exclusion criteria include acute stress disorder (F43

Related ICD-10 Codes

Related CPT Codes

90834CPT Code

Psychotherapy, 45 minutes with patient.

Clinical Scenario

Used for therapy sessions focused on PTSD treatment.

Documentation Requirements

Document the duration of the session and specific therapeutic techniques used.

Specialty Considerations

Psychiatrists should ensure that the treatment plan aligns with the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of PTSD, enabling better tracking of treatment outcomes and resource allocation. The granularity of the codes helps in understanding the chronicity and severity of the condition.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of PTSD, enabling better tracking of treatment outcomes and resource allocation. The granularity of the codes helps in understanding the chronicity and severity of the condition.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of PTSD, enabling better tracking of treatment outcomes and resource allocation. The granularity of the codes helps in understanding the chronicity and severity of the condition.

Resources

Clinical References

  • •
    National Center for PTSD

Coding & Billing References

  • •
    National Center for PTSD

Frequently Asked Questions

What is the difference between PTSD and acute stress disorder?

PTSD is diagnosed when symptoms persist for more than one month after a traumatic event, while acute stress disorder is diagnosed when symptoms occur within three days to one month.