O31.1
Non-billableCont pregnancy after spon abortion of one fetus or more
Continuing pregnancy after spontaneous abortion of one fetus or more
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
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
- mental and behavioral disorders associated with the puerperium (F53.-)
- obstetrical tetanus (A34)
- postpartum necrosis of pituitary gland (E23.0)
- puerperal osteomalacia (M83.0)
- delayed delivery of second twin, triplet, etc. (O63.2)
- malpresentation of one fetus or more (O32.9)
- placental transfusion syndromes (O43.0-)
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)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code O31.1?
ICD-10-CM code O31.1 represents "Continuing pregnancy after spontaneous abortion of one fetus or more". It is a non-billable header code — use a more specific child code for billing purposes.
Is O31.1 a billable code?
No, O31.1 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 O31.1.
What chapter is O31.1 in?
O31.1 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).
What codes cannot be used with O31.1?
O31.1 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-).
What are the subcategories under O31.1?
O31.1 has 4 child codes, including: O31.10 (Cont preg after spon abortion of one fetus or more, unsp tri), O31.11 (Cont preg after spon abort of one fetus or more, first tri), O31.12 (Cont preg after spon abort of one fetus or more, second tri), O31.13 (Cont preg after spon abort of one fetus or more, third tri).
Are additional codes required with O31.1?
Yes, when using O31.1 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 O31.1?
O31.1 is linked to 1 UMLS Concept Unique Identifier: C2907988. 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.