O91.21
Non-billableNonpurulent mastitis associated with pregnancy
Nonpurulent mastitis associated with pregnancy
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Gestational interstitial mastitis
- Gestational lymphangitis of breast
- Gestational mastitis NOS
- Gestational parenchymatous mastitis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- supervision of normal pregnancy (Z34.-)
Excludes 2
Conditions not included here, but the patient may have both
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.
- code to identify infection
Child Codes (4)
Also Known As / Clinical Terms
UMLS
- Gestational interstitial mastitisC2909508
- Gestational lymphangitis of breastC1411622
- Gestational mastitis NOSC2909509
- Gestational parenchymatous mastitisC2909510
- Nonpurulent mastitis associated w pregnancy, unsp trimesterC2909514
- Nonpurulent mastitis associated with pregnancyC2909514
- Nonpurulent mastitis associated with pregnancy, unspecified trimesterC2909514
Frequently Asked Questions
What is the ICD-10 code for nonpurulent mastitis associated with pregnancy?
The ICD-10-CM code for nonpurulent mastitis associated with pregnancy is O91.21. The full clinical description is "Nonpurulent mastitis associated with pregnancy". O91.21 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code O91.21 mean?
ICD-10-CM code O91.21 represents "Nonpurulent mastitis associated with pregnancy". 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 O91.21 a billable code?
No, O91.21 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 O91.21.
What chapter is O91.21 in?
O91.21 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).
What codes cannot be used with O91.21?
O91.21 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-).
What are the subcategories under O91.21?
O91.21 has 4 child codes, including: O91.211 (Nonpurulent mastitis associated w pregnancy, first trimester), O91.212 (Nonpurulent mastitis assoc w pregnancy, second trimester), O91.213 (Nonpurulent mastitis associated w pregnancy, third trimester), O91.219 (Nonpurulent mastitis associated w pregnancy, unsp trimester).
Are additional codes required with O91.21?
Yes, when using O91.21 you should also code: code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.; code to identify infection.
What are the UMLS CUIs for O91.21?
O91.21 is linked to 5 UMLS Concept Unique Identifiers: C2909508, C1411622, C2909509, C2909510, C2909514. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.