2027 ICD-10-CM Diagnosis Code O70.1Second degree perineal laceration during delivery
ICD-10-CM Codes›O00-O9A›O60-O77›O70
- Billable — Valid for Submission
- Not Chronic
O70.1 is a billable ICD-10-CM diagnosis code for second degree perineal laceration during delivery. 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 perineal laceration involving pelvic floor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under OB-related trauma to perineum and vulva.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O70.1.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Perineal laceration involving pelvic floor
- Second degree perineal laceration
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O70.1: its own notes plus those printed at O70 and Chapter 15. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- episiotomy extended by laceration
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.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- perineal laceration involving anal sphincter (O70.2-)
- obstetric high vaginal laceration alone (O71.4)
- 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 O70.1, its category, or a range that includes it.
Applicable To 3
These notes mention O70.1.
- O70.2 Third degree perineal laceration during deliveryPerineal laceration, rupture or tear during delivery as in O70.1, also involving anal sphincter
- O70.2 Third degree perineal laceration during deliveryPerineal laceration, rupture or tear during delivery as in O70.1, also involving rectovaginal septum
- O70.2 Third degree perineal laceration during deliveryPerineal laceration, rupture or tear during delivery as in O70.1, also involving sphincter NOS
Excludes1 4
These codes carry an Excludes1 note naming O70.1: they are not reported together with it, unless the two conditions are unrelated.
- N89.8 Other specified noninflammatory disorders of vaginacurrent obstetric trauma (O70.-, O71.4, O71.7-O71.8) names O70.-, which includes this code
- N90 Other noninflammatory disorders of vulva and perineumcurrent obstetric trauma (O70.-, O71.7-O71.8) names O70.-, which includes this code
- O71.4 Obstetric high vaginal laceration aloneobstetric high vaginal laceration with perineal laceration (O70.-) names O70.-, which includes this code
- S31.4 Open wound of vagina and vulvainjury to vagina and vulva during delivery (O70.-, O71.4) names O70.-, which includes this code
Excludes2 1
These codes carry an Excludes2 note naming O70.1: its condition is not part of those codes, and both may be reported when the patient has both.
- Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
floor See Also: Laceration, back, lower;
complicating delivery O70.1
Tear, torn (traumatic) See Also: Laceration;
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
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Convert O70.1 to ICD-9-CMHistory
Code HistoryHistory
Questions About O70.1Overview
What is the ICD-10 code for second degree perineal laceration during delivery?
The ICD-10-CM code for second degree perineal laceration during delivery is O70.1 (sometimes written as O701). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is O70.1 (Perineal laceration during delivery) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report second degree perineal laceration during delivery on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does O70.1 group to?
When second degree perineal laceration during delivery 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 O70.1 be reported for?
The Medicare Code Editor checks second degree perineal laceration during delivery against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.
Can O70.1 be reported with a code from O70.2?
Not as a rule. The Excludes1 note on O70.1 lists "perineal laceration involving anal sphincter (O70.2-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
