B85.4
Billable codeMixed pediculosis and phthiriasis
The ICD-10 code for mixed pediculosis and phthiriasis is B85.4.
Clinical notes
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
- B85.0Pediculosis due to Pediculus humanus capitis
- B85.1Pediculosis due to Pediculus humanus corporis
- B85.2Pediculosis, unspecified
- B85.3Phthiriasis
- B85.4Mixed pediculosis and phthiriasis
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 1323
Associated MS-DRGs
B85.4 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 564Other Musculoskeletal System and Connective Tissue Diagnoses with MCC
- DRG 565Other Musculoskeletal System and Connective Tissue Diagnoses with CC
- DRG 566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC
- DRG 606Minor Skin Disorders with MCC
- DRG 607Minor Skin Disorders without MCC