2027 ICD-10-CM Diagnosis Code O90.1Disruption of perineal obstetric wound
ICD-10-CM Codes›O00-O9A›O85-O92›O90
- Billable — Valid for Submission
- Not Chronic
O90.1 is a billable ICD-10-CM diagnosis code for disruption of perineal obstetric wound. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 769, 776. The code is restricted by the Medicare Code Editor to maternity cases (age 9 through 64). Coders also document this condition as dehiscence of episiotomy wound in puerperium. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications specified during the puerperium.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O90.1.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Dehiscence of episiotomy wound in puerperium
- Dehiscence of surgical wound
- Disruption of perineal laceration repair in the puerperium
- Obstetric perineal wound disruption
- Perineal wound dehiscence
- Secondary perineal tear in the puerperium
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O90.1: its own notes plus those printed at block O85-O92 and Chapter 15. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Disruption of wound of episiotomy
- Disruption of wound of perineal laceration
- Secondary perineal tear
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- supervision of normal pregnancy (Z34.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Notes
General instructions on how these codes are used.
- 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
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name O90.1, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming O90.1: they are not reported together with it, unless the two conditions are unrelated.
- T81.3 Disruption of wound, not elsewhere classifieddisruption of perineal obstetric wound (O90.1)
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
episiotomy O90.1
episiotomy O90.1
perineal (obstetric) O90.1
Puerperal, puerperium (complicated by, complications)
episiotomy wound O90.1
secondary perineal tear O90.1
Tear, torn (traumatic) See Also: Laceration;
perineal, secondary O90.1
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Postpartum Care
Taking home a new baby is one of the happiest times in a woman's life. But it also presents both physical and emotional challenges. :
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert O90.1 to ICD-9-CMHistory
Code HistoryHistory
Questions About O90.1Overview
What is the ICD-10 code for disruption of perineal obstetric wound?
The ICD-10-CM code for disruption of perineal obstetric wound is O90.1 (sometimes written as O901). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is O90.1 (Complications of the puerperium, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report disruption of perineal obstetric wound on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does O90.1 group to?
When disruption of perineal obstetric wound is the principal diagnosis on an inpatient stay, it groups to MS-DRG 769, 776, with relative weights from 0.6718 to 1.6666 depending on complications. Higher weights mean higher Medicare reimbursement.
Who can O90.1 be reported for?
The Medicare Code Editor checks disruption of perineal obstetric wound against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.
What is the ICD-9 equivalent of O90.1?
Under the General Equivalence Mappings, disruption of perineal obstetric wound converts to ICD-9-CM 674.22 (disrupt perin-del w p/p) and 674.24 (disrupt perineum-postpar). The mapping is approximate, so confirm the match fits the documentation.
