What ICD‑10 code should be assigned to a patient recently treated for chlamydia who is now asymptomatic and undergoing a test of cure? | Rounds What ICD‑10 code should be assigned to a patient recently treated for chlamydia who is now asymptomatic and undergoing a test of cure? | Rounds
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What ICD‑10 code should be assigned to a patient recently treated for chlamydia who is now asymptomatic and undergoing a test of cure?

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Follow-up after treated chlamydia with negative symptoms

Code Z09 (Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm) when the visit represents surveillance after completion of treatment and the condition no longer exists. [1]

ICD-10-CM code selection

  • Z09 is assigned for follow-up examination after completed treatment for non-malignant conditions, including medical treatment. [1]
  • Z86.19 (Personal history of other infectious and parasitic diseases) can be added to document history of the treated infection. [2]
  • The follow-up code should be sequenced first, followed by the history code. [1]
  • Primary code: Z09. [1]
  • Additional code (commonly used for documenting treated infection history): Z86.19. [1], [2]

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