2026 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 2026 (October 1, 2025 through September 30, 2026). 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
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Perineal laceration, rupture or tear during delivery as in O70.0
- Perineal laceration, rupture or tear during delivery as in O70.0
- Perineal laceration, rupture or tear during delivery as in O70.0
Type 1 Excludes
- perineal laceration involving anal sphincter O70.2
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Delivery (childbirth) (labor)
- complicated - O75.9
- by
- laceration (perineal) - O70.9
- pelvic
- floor - O70.1
- muscles - O70.1
- second degree - O70.1
- vagina, vaginal (deep) (high) (without perineal laceration) - O71.4
- muscles, with perineum - O70.1
- Injury - See Also: specified injury type; - T14.90
- pelvis, pelvic (floor) - S39.93
- complicating delivery - O70.1
- floor - See Also: Laceration, back, lower;
- complicating delivery - O70.1
- perineum
- during delivery - O70.9
- second degree - O70.1
- pelvic
- floor, complicating delivery - O70.1
- Tear, torn (traumatic) - See Also: Laceration;
- pelvic
- floor, complicating delivery - O70.1
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Delivery(childbirth) (labor)
- complicated
- by
- laceration (perineal)
- pelvic
- floor
- Delivery(childbirth) (labor)
- complicated
- by
- laceration (perineal)
- perineum, perineal
- muscles
- Delivery(childbirth) (labor)
- complicated
- by
- laceration (perineal)
- perineum, perineal
- second degree
- Delivery(childbirth) (labor)
- complicated
- by
- laceration (perineal)
- vagina, vaginal (deep) (high) (without perineal laceration)
- muscles, with perineum
- Injury
- pelvis, pelvic (floor)
- complicating delivery
- Laceration
- pelvic
- floor
- complicating delivery
- Laceration
- perineum
- female
- during delivery
- second degree
- Perforation, perforated(nontraumatic) (of)
- pelvic
- floor
- obstetrical trauma
- Rupture, ruptured
- pelvic
- floor, complicating delivery
- Tear, torn(traumatic)
- pelvic
- floor, complicating delivery
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Second Degree Perineal Laceration
injury to perineum involving perineal muscles but not involving anal sphincter. (revitalize)
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
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, 2025 through September 30, 2026.
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.
What is the ICD-9 equivalent of O70.1?
Under the General Equivalence Mappings, second degree perineal laceration during delivery converts to ICD-9-CM 664.11 (del w 2 deg lacerat-del) and 664.14 (del w 2 deg lac-postpart). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
