C81.21

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.

ICD-9-CM equivalent

Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.

• 20161

Associated MS-DRGs

C81.21 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 814Reticuloendothelial and Immunity Disorders with MCC
• DRG 815Reticuloendothelial and Immunity Disorders with CC
• DRG 816Reticuloendothelial and Immunity Disorders without CC/MCC
• DRG 820Lymphoma and Leukemia with Major O.R. Procedures with MCC
• DRG 821Lymphoma and Leukemia with Major O.R. Procedures with CC
• DRG 822Lymphoma and Leukemia with Major O.R. Procedures without CC/MCC
• DRG 823Lymphoma and Non-Acute Leukemia with Other Procedures with MCC
• DRG 824Lymphoma and Non-Acute Leukemia with Other Procedures with CC
• DRG 825Lymphoma and Non-Acute Leukemia with Other Procedures without CC/MCC
• DRG 840Lymphoma and Non-Acute Leukemia with MCC
• DRG 841Lymphoma and Non-Acute Leukemia with CC
• DRG 842Lymphoma and Non-Acute Leukemia without CC/MCC