ICD-10-CM 2027
ICD-10 code for cervix asc-us
Atypical squamous cells of undetermined significance on cytologic smear of cervix (ASC-US)
From the official ICD-10-CM alphabetic index entry “ASC-US (atypical squamous cells of undetermined significance on cytologic smear) › cervix”. Page updated September 29, 2026.
About coding cervix asc-us
The ICD-10-CM code for cervix asc-us is R87.610 (Atypical squamous cells of undetermined significance on cytologic smear of cervix (ASC-US)).
Within R87.61 (abnormal cytological findings in specimens from cervix uteri), R87.610 is specifically for atypical squamous cells of undetermined significance on cytologic smear of cervix (ASC-US). Related codes cover atypical squamous cells cannot exclude high grade squamous intraepithelial lesion on cytologic smear of cervix (ASC-H) (R87.611), low grade squamous intraepithelial lesion on cytologic smear of cervix (LGSIL) (R87.612), high grade squamous intraepithelial lesion on cytologic smear of cervix (HGSIL) (R87.613), cytologic evidence of malignancy on smear of cervix (R87.614), unsatisfactory cytologic smear of cervix (R87.615), Satisfactory cervical smear but lacking transformation zone (R87.616), other abnormal cytological findings on specimens from cervix uteri (R87.618) and unspecified abnormal cytological findings in specimens from cervix uteri (R87.619).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 742 (Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC, relative weight 1.8456), DRG 743 (Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC, relative weight 1.2974), DRG 760 (Menstrual and Other Female Reproductive System Disorders with CC/MCC, relative weight 1.0129) and DRG 761 (Menstrual and Other Female Reproductive System Disorders without CC/MCC, relative weight 0.7041), in MDC 13 (Diseases and Disorders of the Female Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about cervix asc-us ICD-10 codes
What is the ICD-10 code for cervix asc-us?
- R87.610 — Atypical squamous cells of undetermined significance on cytologic smear of cervix (ASC-US).
Is R87.610 billable?
- Yes. R87.610 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R87.610 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R87.610 as a principal diagnosis.
Is R87.610 a CC or MCC?
- No. R87.610 is neither a CC nor an MCC under MS-DRG v44.0.