ICD-10-CM Code O70.21

Third degree perineal laceration during delivery, IIIa

Version 2021 Billable Code Maternity Diagnoses Diagnoses For Females Only

Valid for Submission

O70.21 is a billable code used to specify a medical diagnosis of third degree perineal laceration during delivery, iiia. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions.

The code O70.21 is applicable to female patients aged 12 through 55 years inclusive. It is clinically and virtually impossible to use this code on a non-female patient outside the stated age range.

ICD-10:O70.21
Short Description:Third degree perineal laceration during delivery, IIIa
Long Description:Third degree perineal laceration during delivery, IIIa

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code O70.21:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Third degree perineal laceration during delivery with less than 50% of external anal sphincter (EAS) thickness torn

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code O70.21 are found in the index:


Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

  • Maternity diagnoses - The Medicare Code Editor detects inconsistencies in maternity cases by checking a patient's age and any diagnosis on the patient's record. The maternity code edits apply to patients age ange is 9–64 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).
  • Diagnoses for females only - The Medicare Code Editor detects inconsistencies between a patient’s sex and any diagnosis on the patient’s record, these edits apply to FEMALES only .

Replacement Code

O7021 replaces the following previously assigned ICD-10 code(s):

  • O70.2 - Third degree perineal laceration during delivery

Convert O70.21 to ICD-9

  • 664.21 - Del w 3 deg lacerat-del (Approximate Flag)
  • 664.24 - Del w 3 deg lac-postpart (Approximate Flag)

Code Classification

  • Pregnancy, childbirth and the puerperium (O00–O99)
    • Complications of labor and delivery (O60-O77)
      • Perineal laceration during delivery (O70)

Code History

  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021