ICD-9-CM 181
CMS Source: final ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.FacebookXLinkedInPrint

181 is a legacy ICD-9-CM diagnosis code for malignant neoplasm of placenta. It was valid on U.S. claims through September 30, 2015 and cannot be reported for services on or after October 1, 2015, when ICD-10-CM replaced the ICD-9 code set. Under the CMS General Equivalence Mappings, its ICD-10-CM replacement is C58 (Malignant neoplasm of placenta), flagged as a direct match.

Code Identity

ICD-9-CM Code
181
Valid for Submission
No — Legacy Code
Code Describes
Malignant neoplasm of placenta
Short Description
Malignant neopl placenta
Parent Block
181 Malignant neoplasm of placenta
ICD-10-CM Replacement

Convert 181 to ICD-10-CM

Based on the final CMS General Equivalence Mappings (GEMs), 181 crosswalks to the following ICD-10-CM code.

ICD-10-CM
C58 Malignant neoplasm of placenta
Exact Match The mapping is direct, with no qualifiers.

Index of Diseases References

Entries in the final ICD-9-CM Index to Diseases and Injuries that point to 181. Tap the icons for the official index conventions.

  • Carcinoma M8010 3 SEE ALSO Neoplasm by site malignant
    • chorionic M9100 3
      • unspecified site
        • female 181
  • Choriocarcinoma M9100 3
    • unspecified site
      • female 181
  • Deciduoma malignum M9100 3 181
  • Osteosarcoma M9180 3 SEE ALSO Neoplasm bone malignant
    • chondroblastic M9181 3 see Neoplasm bone malignant

Information for Patients

Tumors and Pregnancy

Tumors during pregnancy are rare, but they can happen. Tumors can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. The most common cancers in pregnancy are breast cancer, cervical cancer, lymphoma, and melanoma. Cancer itself rarely harms the baby, and some cancer treatments are safe during pregnancy.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Questions About 181

Is 181 (malignant neoplasm of placenta) still a valid code?

No. This code belonged to ICD-9-CM, which the United States retired after September 30, 2015. Claims with dates of service on or after October 1, 2015 must use ICD-10-CM codes, such as its replacement C58.

What is the ICD-10 replacement for 181?

The General Equivalence Mappings crosswalk this code directly to ICD-10-CM C58 (Malignant neoplasm of placenta), a one-to-one match.

What did 181 mean?

In the final ICD-9-CM release, this code described malignant neoplasm of placenta. It sat in block 181 Malignant neoplasm of placenta under Neoplasms (140–239).