ICD-10-CM 2027
ICD-10 code for Cystinosis
From the official ICD-10-CM alphabetic index entry “Cystinosis (malignant)”. Page updated September 29, 2026.
About coding Cystinosis
The ICD-10-CM code for Cystinosis is E72.04 (Cystinosis).
Within E72.0 (disorders of amino-acid transport), E72.04 is specifically for Cystinosis. Related codes cover unspecified (E72.00), Cystinuria (E72.01), Hartnup's disease (E72.02), Lowe's syndrome (E72.03) and other disorders of amino-acid transport (E72.09).
Don't report E72.04 together with the conditions in its Excludes1 note: Fanconi (-de Toni) (-Debré) syndrome without cystinosis (E72.09).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Don't confuse with (Excludes1 for E72.04)
- Fanconi (-de Toni) (-Debré) syndrome without cystinosis (E72.09)
Common questions about Cystinosis ICD-10 codes
What is the ICD-10 code for Cystinosis?
- E72.04 — Cystinosis.
Is E72.04 billable?
- Yes. E72.04 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E72.04 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E72.04 as a principal diagnosis.
Is E72.04 a CC or MCC?
- E72.04 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.