ICD9 Billing Codes for EIN Diagnoses

 

Accurate diagnostic codes are essential for reimbursement of pathology services, and the most commonly employed system is the ICD-9-CM curated by the ICD-9-CM Coordination and Maintenance Committee and issued by the Dept. of Health and Human Services of the US government.   Effective October 1, 2009 two new ICD-9 diagnostic codes were issued, for benign endometrial hyperplasia and EIN as defined in the pathology literature (ref 1,2).  These can be referenced for diagnostic pathology services in which EIN or benign endometrial hyperplasia is diagnosed.

 

Table I: EIN Schema ICD9, effective Oct 1, 2009 
 

ICD9 Term

ICD9 Code

Excludes

Benign Endometrial Hyperplasia

621.34
(new code)

 

Endometrial Intraepithelial Neoplasia [EIN]

621.35
(new code)

Malignant neoplasm of the endometrium with endometrial intraepithelial neoplasia [EIN] (182.0)

Malignant neoplasm of endometrium

182.0

 

  
T
able II: Endometrial Diagnostic Terminology

Nomenclature

Topography

Functional
Category

Treatment

Benign Endometrial Hyperplasia

Diffuse

Prolonged Estrogen Effect

Hormonal therapy, Symptomatic

EIN
Endometrial Intraepithelial Neoplasia

Focal progressing to diffuse

Precancerous

Hormonal or surgical

Endometrial adenocarcinoma, endometrioid type, well differentiated

Focal progressing to diffuse

Malignant

Surgical
stage-based

 

Table III: EIN Schema SNOMED Codes
 

SNOMED Term

SNOMED Code

Endometrial Intraepithelial Neoplasia

419327006

 

References:

  1. Mutter GL, Zaino RJ, Baak JPA, Bentley RC, Robboy SJ. The Benign Endometrial Hyperplasia Sequence and Endometrial Intraepithelial Neoplasia (EIN). Int J Gynecol Pathol 2007: 26: 103-114.
     

  2. Mutter GL, Zaino RJ, Baak JPA, Bentley RC, Robboy SJ. Benign endometrial hyperplasia and EIN. In: Robboy SJ, Mutter GL, Prat J, Bentley R, Russell P, Anderson MC, editors. Robboy's Pathology of the Female Reproductive Tract. New York, New York: Elsevier, 2009: 367-391.
     

 

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