E24.9

Billable

Cushing's syndrome, unspecified

HCC Category Mapping

V24HCC 23 — Other Significant Endocrine and Metabolic Disorders

0.230

ESRDHCC 23 — Other Significant Endocrine and Metabolic Disorders

0.000

RxHCCHCC 43 — Other Significant Endocrine and Metabolic Disorders

0.000

What This Code Means

Cushing's syndrome where the underlying cause or source has not been determined or specified.

Coding Tips

•This is an unspecified code; use only when the etiology cannot be determined from available documentation
•Query the provider to determine if further diagnostic workup has identified the cause

Clinical Significance

Unspecified Cushing syndrome indicates documented cortisol excess without determination of the underlying etiology. Given the markedly different treatment approaches for pituitary, ectopic, adrenal, and drug-induced causes, identifying the source is essential for clinical management and should be actively pursued.

Documentation Requirements

✓Query the provider about diagnostic workup results.
✓Document cortisol levels, adrenocorticotropic hormone levels (to differentiate adrenocorticotropic hormone-dependent from adrenocorticotropic hormone-independent causes), dexamethasone suppression test results, and any pending imaging or additional studies.

Commonly Confused Codes

E24.0 (pituitary-dependent Cushing disease if pituitary source confirmed), E24.2 (drug-induced if medication is causative), E24.3 (ectopic adrenocorticotropic hormone if non-pituitary tumor source), E27.0 (adrenocortical overactivity).

Code Hierarchy

└E24Cushing's syndrome └E24.9Cushing's syndrome, unspecified

└E24.9Cushing's syndrome, unspecified