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ICD-10-CM Codes
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O00-O9A
Pregnancy, childbirth and the puerperium
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O20-O29
Other maternal disorders predominantly related to pregnancy
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O26-
Maternal care for other conditions predominantly related to pregnancy
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2021 ICD-10-CM Diagnosis Code O26.40
2021 ICD-10-CM Diagnosis Code O26.40
Herpes gestationis, unspecified trimester
2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
- O26.40 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM O26.40 became effective on October 1, 2020.
- This is the American ICD-10-CM version of O26.40 - other international versions of ICD-10 O26.40 may differ.
ICD-10-CM Coding Rules
- O26.40 is applicable to maternity patients aged 12 - 55 years inclusive.
The following code(s) above
O26.40 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
O26.40:
- Herpes gestationis
- Herpes gestationis in pregnancy
Clinical Information
- A rare autoimmune bullous dermatitis that develops during pregnancy, most often during the second and third trimesters.
- An itching, autoimmune, bullous skin disease that occurs during the last two trimesters of pregnancy and puerperium. It also affects non-pregnant females with tissue of placenta origin, such as choriocarcinoma; or hydatidiform mole. It exhibits antigenic and clinical similarity to bullous pemphigoid (pemphigoid, bullous). This disease does not involve herpes viruses (old name, herpes gestationis).
ICD-10-CM O26.40 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 817 Other antepartum diagnoses with o.r. Procedures with mcc
- 818 Other antepartum diagnoses with o.r. Procedures with cc
- 819 Other antepartum diagnoses with o.r. Procedures without cc/mcc
- 831 Other antepartum diagnoses without o.r. Procedures with mcc
- 832 Other antepartum diagnoses without o.r. Procedures with cc
- 833 Other antepartum diagnoses without o.r. Procedures without cc/mcc
Convert O26.40 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To O26.40
O26.20 …… unspecified trimester
O26.3 Retained intrauterine contraceptive device in pregnancy
O26.30 …… unspecified trimester
O26.40
…… unspecified trimester
O26.5 Maternal hypotension syndrome
O26.50 …… unspecified trimester
O26.6 Liver and biliary tract disorders in pregnancy, childbirth and the puerperium
O26.61 Liver and biliary tract disorders in pregnancy
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
