2021 ICD-10-CM Code O99.12

Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth

  1. ICD-10-CM Index
  2. Chapter: O00–O99
  3. Section: O94-O9A
  4. Block: O99
  5. O99.12 - Oth dis of the bld/bld-form org/immun mechnsm comp chldbrth
Version 2021
Billable Code
Maternity Diagnoses
Diagnoses For Females Only

Valid for Submission

O99.12 is a billable diagnosis code used to specify a medical diagnosis of other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth. The code O99.12 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code O99.12 might also be used to specify conditions or terms like blood coagulation disorder complicating childbirth.

The code O99.12 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:O99.12
Short Description:Oth dis of the bld/bld-form org/immun mechnsm comp chldbrth
Long Description:Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating childbirth

Code Classification

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 O99.12 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:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert O99.12 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code O99.12 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

Information for Patients


Blood Disorders

Also called: Hematologic diseases

Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets.

Blood disorders affect one or more parts of the blood and prevent your blood from doing its job. They can be acute or chronic. Many blood disorders are inherited. Other causes include other diseases, side effects of medicines, and a lack of certain nutrients in your diet.

Types of blood disorders include


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Childbirth Problems

While childbirth usually goes well, complications can happen. They can cause a risk to the mother, baby, or both. Possible complications include

For some of these problems, the baby may need to be delivered surgically by a Cesarean section.


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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)

Previous Code: O99.119

Related Codes

Next Code: O99.13