E34.328 ICD-10-CM Code: Other genetic causes of short stature
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Endocrine, nutritional and metabolic diseases (E00-E89) / Disorders of other endocrine glands (E20-E35)
E34.328
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceOther genetic causes of short stature
Short stature caused by identified genetic factors, such as specific gene mutations or chromosomal abnormalities that affect growth.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Short stature due to ACAN gene variant
- Short stature due to aggrecan deficiency
- Short stature due to NPR-2 gene variant
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for E34.328 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for E34.328 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for E34.328 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for E34.328 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for E34.328 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for E34.328 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is E34.328 an HCC code?
No. E34.328 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
E34.328 is the ICD-10-CM diagnosis code for other genetic causes of short stature. Short stature caused by identified genetic factors, such as specific gene mutations or chromosomal abnormalities that affect growth. E34.328 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering disorders of other endocrine glands (e20-e35).
E34.328 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Use this code when a specific genetic cause of short stature has been documented and identified.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for E34.328 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code when a specific genetic cause of short stature has been documented and identified
- •Ensure the genetic cause is clearly documented in the medical record before assigning this code