A56.4
Billable codeChlamydial infection of pharynx
The ICD-10 code for chlamydial infection of pharynx is A56.4.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- A56.0Chlamydial infection of lower genitourinary tractnon-billable header
- A56.1Chlamydial infection of pelviperitoneum and other genitourinary organsnon-billable header
- A56.2Chlamydial infection of genitourinary tract, unspecified
- A56.3Chlamydial infection of anus and rectum
- A56.8Sexually transmitted chlamydial infection of other sites
- A56.4Chlamydial infection of pharynx
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 09951
Associated MS-DRGs
A56.4 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
- DRG 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
- DRG 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
- DRG 152Otitis Media and URI with MCC
- DRG 153Otitis Media and URI without MCC