2019 ICD-10-CM Diagnosis Code O99.355

Diseases of the nervous system complicating the puerperium

    2016 2017 2018 2019 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
  • O99.355 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM O99.355 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of O99.355 - other international versions of ICD-10 O99.355 may differ.
ICD-10-CM Coding Rules
  • O99.355 is applicable to maternity patients aged 12 - 55 years inclusive.
  • O99.355 is applicable to female patients.
The following code(s) above O99.355 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 O99.355:
  • O00-O9A
    2019 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    Note
    • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
    • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
    • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
    • 1st trimester- less than 14 weeks 0 days
    • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
    • 3rd trimester- 28 weeks 0 days until delivery
    Type 1 Excludes
    • supervision of normal pregnancy (Z34.-)
    Type 2 Excludes
    • 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 from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
    Pregnancy, childbirth and the puerperium
  • O99
    ICD-10-CM Diagnosis Code O99

    Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Includes
    • conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care
    Type 2 Excludes
    • when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)
    Use Additional
    • code to identify specific condition
    Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
  • O99.35
    ICD-10-CM Diagnosis Code O99.35

    Diseases of the nervous system complicating pregnancy, childbirth, and the puerperium

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Applicable To
    Type 2 Excludes
    • pregnancy related peripheral neuritis (O26.8-)
    Diseases of the nervous system complicating pregnancy, childbirth, and the puerperium
Approximate Synonyms
  • Epilepsy complicating period after childbirth
  • Postpartum epilepsy
ICD-10-CM O99.355 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 769 Postpartum and post abortion diagnoses with o.r. Procedure
  • 776 Postpartum and post abortion diagnoses without o.r. Procedure

Convert O99.355 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

Diagnosis Index entries containing back-references to O99.355:

ICD-10-CM Codes Adjacent To O99.355
O99.342 Other mental disorders complicating pregnancy, second trimester
O99.343 Other mental disorders complicating pregnancy, third trimester
O99.344 Other mental disorders complicating childbirth
O99.345 Other mental disorders complicating the puerperium
O99.35 Diseases of the nervous system complicating pregnancy, childbirth, and the puerperium
O99.350 Diseases of the nervous system complicating pregnancy, unspecified trimester
O99.351 Diseases of the nervous system complicating pregnancy, first trimester
O99.352 Diseases of the nervous system complicating pregnancy, second trimester
O99.353 Diseases of the nervous system complicating pregnancy, third trimester
O99.354 Diseases of the nervous system complicating childbirth
O99.355 Diseases of the nervous system complicating the puerperium
O99.4 Diseases of the circulatory system complicating pregnancy, childbirth and the puerperium
O99.41 Diseases of the circulatory system complicating pregnancy
O99.411 …… first trimester
O99.412 …… second trimester
O99.413 …… third trimester
O99.419 …… unspecified trimester
O99.42 Diseases of the circulatory system complicating childbirth
O99.43 Diseases of the circulatory system complicating the puerperium
O99.5 Diseases of the respiratory system complicating pregnancy, childbirth and the puerperium
O99.51 Diseases of the respiratory system complicating pregnancy

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.