A93.2 Colorado tick fever

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

MS-DRG index

Defines the logic of DRG(s) 865-866 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 066.1 Tick-borne fever (approximate)

Diagnosis Index entries for A93.2

• American › mountain tick fever
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › American › mountain (tick)
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Colorado tick (virus)
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › mountain › tick (American) (Colorado) (viral)
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › non-exanthematous tick
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › tick › American mountain
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › tick › Colorado
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › tick › mountain
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › tick › nonexanthematous
• Mountain › tick fever
• Nonexanthematous tick fever

Nearby codes

• A93 Other arthropod-borne viral fevers, not elsewhere classified
• A93.0 Oropouche virus disease
• A93.1 Sandfly fever
• A93.2 Colorado tick fever (this code)
• A93.8 Other specified arthropod-borne viral fevers