ICD-9-CM 931
CMS Source: final ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.FacebookXLinkedInPrint

931 is a legacy ICD-9-CM diagnosis code for foreign body in ear. 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, it maps to 3 ICD-10-CM candidates: T16.1XXA, T16.2XXA, and T16.9XXA.

Code Identity

ICD-9-CM Code
931
Valid for Submission
No — Legacy Code
Code Describes
Foreign body in ear
Short Description
Foreign body in ear
Same as the full description in the CMS dataset.
Parent Block
931 Foreign body in ear
ICD-10-CM Replacement
3 candidates — see Crosswalk

Convert 931 to ICD-10-CM

Based on the final CMS General Equivalence Mappings (GEMs), 931 crosswalks to the following ICD-10-CM codes. When more than one candidate is listed, pick the code the documentation supports.

ICD-10-CM
T16.1XXA Foreign body in right ear, initial encounter
Approximate The match is approximate rather than exact.
ICD-10-CM
T16.2XXA Foreign body in left ear, initial encounter
Approximate The match is approximate rather than exact.
ICD-10-CM
T16.9XXA Foreign body in ear, unspecified ear, initial encounter
Approximate The match is approximate rather than exact.

Index of Diseases References

Entries in the final ICD-9-CM Index to Diseases and Injuries that point to 931. Tap the icons for the official index conventions.

  • Adamantinoblastoma M9310 0 see Ameloblastoma
  • Adamantinoma M9310 0 see Ameloblastoma
  • Adamantoblastoma M9310 0 see Ameloblastoma
  • Foreign body
    • entering through orifice current old
      • auditory canal 931
      • auricle 931
      • ear external 931
  • Myosis persistent 379.42
    • stromal endolymphatic M8931 1 236.0
  • Odontoameloblastoma M9311 0 213.1
  • Stromatosis endometrial M8931 1 236.0
  • Tumor M8000 1 SEE ALSO Neoplasm by site unspecified nature

Information for Patients

Ear Disorders

Your ear has three main parts: outer, middle and inner. You use all of them in hearing. Sound waves come in through your outer ear. They reach your middle ear, where they make your eardrum vibrate. The vibrations are transmitted through three tiny bones, called ossicles, in your middle ear.

Read the full article at MedlinePlus

Foreign Bodies

If you've ever gotten a splinter or had sand in your eye, you've had experience with a foreign body. A foreign body is something that is stuck inside you but isn't supposed to be there. You may inhale or swallow a foreign body, or you may get one from an injury to almost any part of your body.

Read the full article at MedlinePlus

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

Questions About 931

Is 931 (foreign body in ear) 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 T16.1XXA, T16.2XXA, and T16.9XXA.

What is the ICD-10 replacement for 931?

The General Equivalence Mappings list 3 ICD-10-CM candidates for this code: T16.1XXA (Foreign body in right ear, initial encounter), T16.2XXA (Foreign body in left ear, initial encounter), and T16.9XXA (Foreign body in ear, unspecified ear, initial encounter). Each match is approximate, so the right choice depends on what the documentation supports.

What did 931 mean?

In the final ICD-9-CM release, this code described foreign body in ear. It sat in block 931 Foreign body in ear under Injury and poisoning (800–999).

Why does 931 map to more than one ICD-10 code?

ICD-10-CM is more specific than ICD-9-CM. The detail packed into this single legacy code was split across T16.1XXA, T16.2XXA, and T16.9XXA, so the General Equivalence Mappings list every candidate rather than forcing one. The correct target is the one the documentation supports.