AutoICD API

O41.12

Non-billable

Chorioamnionitis

Chorioamnionitis

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

O30-O48

Parent Code

O41.1

Child Codes

4

Coding Notes

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

  • supervision of normal pregnancy (Z34.-)
  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

Excludes 2

Conditions not included here, but the patient may have both

  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

Use Additional Code

Additional codes that should follow this code

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Child Codes (4)

O41.121

Chorioamnionitis, first trimester

O41.122

Chorioamnionitis, second trimester

O41.123

Chorioamnionitis, third trimester

O41.129

Chorioamnionitis, unspecified trimester

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is the ICD-10 code for chorioamnionitis?

The ICD-10-CM code for chorioamnionitis is O41.12. The full clinical description is "Chorioamnionitis". O41.12 is a non-billable header code. Use a more specific child code for billing purposes.

What does ICD-10 code O41.12 mean?

ICD-10-CM code O41.12 represents "Chorioamnionitis". It is classified under Chapter 15: Pregnancy, Childbirth and the Puerperium and is a non-billable header code. Use a more specific child code for billing purposes.

Is O41.12 a billable code?

No, O41.12 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under O41.12.

What chapter is O41.12 in?

O41.12 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).

What codes cannot be used with O41.12?

O41.12 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-); encounter for suspected maternal and fetal conditions ruled out (Z03.7-).

What are the subcategories under O41.12?

O41.12 has 4 child codes, including: O41.121 (Chorioamnionitis, first trimester), O41.122 (Chorioamnionitis, second trimester), O41.123 (Chorioamnionitis, third trimester), O41.129 (Chorioamnionitis, unspecified trimester).

Are additional codes required with O41.12?

Yes, when using O41.12 you should also code: code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known..

What are the UMLS CUIs for O41.12?

O41.12 is linked to 1 UMLS Concept Unique Identifier: C0008495. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

Try FreeView API Docs

Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.