---
type: "Bill"
title: "Drugs and Devices - Electronic Prescriptions - Controlled Dangerous Substances"
description: "Drugs and Devices - Electronic Prescriptions - Controlled Dangerous Substances"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2020"
identifier: "SB 166"
citation: "Maryland SB 166 (2020)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Kelley"]
version_count: 3
action_count: 14
vote_count: 2
first_action: "2020-01-13"
last_action: "2020-05-08"
source: "openstates"
source_identifier: "ocd-bill/f1c39702-ad7d-4788-85bd-09ce2e5ecf33"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0166?ys=2020RS&search=True"
source_hash: "9a89ab6a783e7e5483e8e4f6d57772351959a0f32f1e3b0fcd32121c680c3927"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-md"]
---

# Maryland SB 166 (2020) — Drugs and Devices - Electronic Prescriptions - Controlled Dangerous Substances

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Chapter - Drugs and Devices - Electronic Prescriptions - Controlled Dangerous Substances** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/Chapters_noln/CH_229_sb0166t.pdf)
2. **First - Drugs and Devices - Electronic Prescriptions - Controlled Dangerous Substances** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/bills/sb/sb0166f.pdf)
3. **Third - Drugs and Devices - Electronic Prescriptions - Controlled Dangerous Substances** (committee substitute) — [source](http://mgaleg.maryland.gov/2020RS/bills/sb/sb0166t.pdf)

## Votes

- On Third Reading — **47–0** (pass) · upper
- On Third Reading — **132–0** (pass) · lower

## Sponsors

- Kelley — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2020-01-13** First Reading Finance `referral-committee`
- **2020-01-15** Hearing 2/06 at 1:00 p.m.
- **2020-02-03** Hearing canceled
- **2020-02-03** Hearing 2/20 at 1:00 p.m.
- **2020-03-06** Favorable with Amendments Report by Finance `committee-passage-favorable`
- **2020-03-09** Favorable with Amendments { `committee-passage-favorable`
- **2020-03-09** Second Reading Passed with Amendments
- **2020-03-11** Third Reading Passed `passage`
- **2020-03-12** Referred Health and Government Operations `referral-committee`
- **2020-03-14** Favorable Report by Health and Government Operations `committee-passage-favorable`
- **2020-03-14** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2020-03-16** Third Reading Passed `passage`
- **2020-03-18** Returned Passed
- **2020-05-08** Enacted under Article II, Section 17(c) of the Maryland Constitution - Chapter 229 `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f1c39702-ad7d-4788-85bd-09ce2e5ecf33`. Confidence: reported (aggregated from official Maryland legislature records).