Hospital-Based Visits Billed with Other Services

The edits described below apply to claims processed under the new claims processing system. Nevertheless, HMSA suggests that practitioners adopt the guidelines when filing claims to HMSA for all private business claims.

The code edit changes described in the guidelines below will not override HMSA’s existing medical policies.

The following code edits apply to hospital-based visits billed with other services.

Modifiers

When billing hospital-based visits with other services, it is important to bill accurately. In some cases, a modifier code must be appended to the visit code to ensure that both services are paid when appropriate. The following modifiers may be used for this purpose: 24, 25, and 57. Practitioners are urged to familiarize themselves with the criteria listed in CPT and the following policies.

Modifier codes should only be used when the service meets the criteria described in CPT and the policies. HMSA will perform postpayment reviews of modifier usage as needed to verify modifiers were used as described. If postpayment review indicates that modifiers were not used appropriately, HMSA will request return of any overpayment. See Benefit Overpayment.

Specific edits

Inpatient: Admissions, subsequent hospital visits, discharges

If an inpatient hospital visit is done in conjunction with any of the service codes listed below, and the hospital visit service meets criteria for the use of modifier codes 24, 25, or 57, the appropriate modifier should be appended to the hospital visit code. Note: The presence of the modifier does not guarantee payment if the modifier is not applicable or other payment policies apply.

The following codes are frequently billed by providers without modifiers when paired with inpatient hospital visits. When these services are billed, if the appropriate modifier is not appended to the hospital visit code, the hospital visit may not be paid.

Admissions (99221 - 99223)

CPT section Codes
Female genital system and maternity 58605, 59025, 59200
Circumcision

54150, 54160

Note: Newborn circumcision is not a benefit of all HMSA plans. Coverage varies by plan.

Medicine - cardiovascular 92980

Subsequent Hospital Care (99231 - 99233)

CPT section Codes
Urinary/female genital systems/maternity 52000, 56605, 57452, 58300, 59025
Circumcision

54150, 54160

Note: Newborn circumcision is not a benefit of all HMSA plans. Coverage varies by plan.

Medicine - dialysis 90947

Discharges (99238 - 99239)

CPT section Codes
Maternity 59025
Circumcision

54150, 54160

Note: Newborn circumcision is not a benefit of all HMSA plans. Coverage varies by plan.

Medicine - dialysis 90945, 90947

Outpatient: ER, observation

If an outpatient hospital visit is done in conjunction with any of the service codes listed below, and the hospital visit service meets criteria for the use of modifier codes 24, 25, or 57, the appropriate modifier should be appended to the hospital visit code. Note: The presence of the modifier does not guarantee payment if the modifier is not applicable or other payment policies apply.

The following codes are frequently billed by providers without modifiers when paired with outpatient hospital visits. When these services are billed, if the appropriate modifier is not appended to the hospital visit code, the hospital visit may not be paid.

Emergency department services (99281 - 99285)

CPT section Codes
Musculoskeletal system 29130[1], 29200
Medicine - inhalation therapy 94640

[1] When this procedure is billed, HMSA’s old claims processing system will allow payment only of the higher-valued procedure, either the visit or procedure. Under the new system, both may be paid if criteria are met for the use of an appropriate modifier.

Observation (99234 - 99236)

CPT section Codes
Maternity 59812

Other hospital visit types: Inpatient consultations, critical care, pediatric critical care, newborn care

If a hospital visit is done in conjunction with any of the service codes listed below, and the hospital visit service meets criteria for the use of modifier codes 24, 25, or 57, the appropriate modifier should be appended to the hospital visit code. Note: The presence of the modifier does not guarantee payment if the modifier is not applicable or other payment policies apply.

The following codes are frequently billed by providers without modifiers when paired with hospital visits. When these services are billed, if the appropriate modifier is not appended to the hospital visit code, the hospital visit may not be paid.

Inpatient consultations (99251 - 99255)

CPT section Codes
Musculoskeletal system 20605, 25622
Respiratory system 31575, 33405, 36556
Digestive system 43239, 43255, 45378, 47562
Maternity 59025
Nervous system 62270

Critical care (99291 - 99292)

CPT section Codes
Respiratory system 36555, 36556, 36620, 36800, 36810, 36815
Nervous system 62270

Pediatric critical care (99293 - 99294)

CPT section Codes
Nervous system 61070

Newborn care (99431 - 99435)

CPT section Codes
Genital system 54150

Note: The lists above are not all inclusive, but represent codes from various sections of CPT that are most commonly billed with a hospital-based visit and to which these guidelines apply.


Revision History

Date Nature of Revision
08/03/2026

Migrated to new platform.